Coventric!


Below, clubs are listed which were never relegated from their national first division after first gaining admittance to it. The appearance of some "big" teams, especially in "small" countries, will not be surprising, but the list is really meant to honour small teams that "won't be moved"; of course, they tend to disappear from the list if one waits long enough: the once embodiment of Unabsteigbarkeit, VfL Bochum, is now securely in the camp of the Fahrstuhlmannschaften and even Coventry City suffered relegation, leaving us with DOS kan niets - zelfs niet degraderen - but they're now known as FC Utrecht. Because of this, for many countries additionally clubs are listed that remained at the top level for several decades, so that Bochum and Coventry feature below after all.

Ever present founder members (of a nationwide first level) are indicated by having the year in which the first league season started in bold.


NB: the records below are up to date as of December 29, 2020. Other countries will be added. Additions and corrections are welcome.
Albania | Argentina | Austria | Belgium | Bosnia-Herzegovina | Brazil | Bulgaria | Chile | Colombia | Croatia | Cyprus | Czech Republic | Czechoslovakia | Denmark | Ecuador | Egypt | England | Faroe Islands | Finland | France | Germany (East) | Germany (West) | Ghana | Greece | Honduras | Hungary | Iceland | Ireland | Israel | Italy | Ivory Coast | Japan | Kosovo | Luxembourg | Malta | Mexico | Montenegro | Netherlands | (North) Macedonia | Northern Cyprus | Northern Ireland | Norway | Peru | Poland | Portugal | Romania | Russia | Scotland | Serbia(-Montenegro) | Slovakia | Slovenia | Soviet Union | Spain | Sweden | Switzerland | Tunisia | Turkey | Ukraine | Uruguay | Wales | Yugoslavia

Albania

Since 1930; includes seasons played in groups.

2012: Kukësi

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1930:

 78  SK Tirana (17 Nëntori) (1930-2017)
 61  Dinamo Tiranë (1950-2012)
 59  Vllaznia Shkodër (1958-2018)
 58* Teuta Durrës (1962-2021 (running))
 53  Flamurtari Vlorë (1950-2004)
 52  Partizani Tiranë (1947-2000)
 40  Elbasani (1959-2000)
 36  Skënderbeu Korçë (1930-1975)
 22  Besa Kavajë (1954-1977)
 21  Teuta Durrës (1930-1958)

Argentina

Since 1895; no proper promotion or relegation until 1903.

1913: Boca Juniors
2014: Defensa y Justicia
2016: Patronato (Paraná)
2019: Central Córdoba (Santiago del Estero)

NB: only counting the professional league (since 1931), Boca Juniors are unrelegated 
    founder members.

Austria

Since 1911.

1911: Austria Wien (Amateure)
1911: SK Rapid Wien
2012: Wolfsberger AC/SK Sankt Andrä
2018: TSV Hartberg

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1911:

109* Austria Wien (Amateure) (1911-2021 (running))
109* SK Rapid Wien (1911-2021 (running))
 55* SK Sturm Graz (1966-2021 (running))
 48  First Vienna (1919-1968)
 46  SC Wacker (Wien) (1914-1961)
 40  Wiener Sport-Club (1911-1952)
 37  SC Admira (Wien)/FC Admira/Wacker (1961-1998)
 32* SV Austria/RB Salzburg (1989-2021 (running))
 24  SC Admira (Wien) (1919-1943)
 23  Grazer AK (1951-1974)
 21  Wiener Sport-Club (1953-1974)
 21  FC Wacker/FC Tirol Innsbruck (1981-2002)
 20  Linzer ASK (1958-1978)

NB: Admira and Wacker merged into Admira/Wacker in 1971; the merger club inherited
      the first level place from Admira.

Belgium

Since 1895; organised promotion and relegation since 1905.

2005: SV Zulte-Waregem
2012: KV Red Star Waasland/Beveren

Clubs with an uninterrupted series of 30 or more seasons in the top flight since 1895:

 97* Standard CL (1921-2021 (running))
 83* Anderlecht (1935-2021 (running))
 62* Club Brugge (1959-2021 (running))
 66  Beerschot (1907-1981)
 59  Antwerp (1901-1968)
 50  FC Liégeois (1945-1995)
 40  Union Saint-Gilloise (1901-1949)
 33  Cercle Brugge (1898-1936)
 33  Lierse SK (1953-1986)
 32* AA Gent (1989-2021 (running))
 31  Daring CB (1903-1939)

Bosnia-Herzegovina

Since 1995; the addition of the Croatian clubs in 2000 and those of the
Serbian clubs in 2002 is considered a promotion for the clubs in question.

1995: Sarajevo
1995: Zeljeznicar Sarajevo
2000: Siroki Brijeg
2000: Zrinjski Mostar
2015: Mladost Doboj Kakanj
2018: Tuzla City (promoted as Sloga Simin Han)

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1995:

 26* Sarajevo (1995-2021 (running))
 26* Zeljeznicar Sarajevo (1995-2021 (running))
 25  Celik Zenica (1995-2020)
 21* Siroki Brijeg (2000-2021 (running))
 21* Zrinjski Mostar (2000-2021 (running))
 17  Sloboda Tuzla (1995-2012)
 12  Leotar Trebinje (2002-2014)
 12  Slavija Istocno Sarajevo (2004-2016)
 10  Velez Mostar (2006-2016)

NB: also considering Yugoslavia, the following clubs had an uninterrupted series
    of 25 or more seasons in the top flight since 1946:

 60* Sarajevo (1958-2021 (running))
 45  Velez Mostar (1955-2003)
 40  Sloboda Tuzla (1969-2012)
 40* Zeljeznicar Sarajevo (1978-2021 (running))
 25  Celik Zenica (1995-2020)

Brazil

Since 1987; league started 1971 but until 1980 there was no proper promotion,
and until 1987 no proper relegation, and the format changed frequently.

1987: Flamengo      
1987: Santos
1987: Săo Paulo

Bulgaria

Since 1937.

1937: Levski Sofia (Levski-Spartak, Vitosha)
2011: Ludogorets 1945 Razgrad
2019: Arda Kardzhali
2019: Tsarsko selo 2015 Sofia
2020: CSKA 1948 Sofia (formerly Chavdar Etropole)

Chile

Since 1933.

1933: Colo Colo

Colombia

Since 1948; no proper promotion or relegation until 1991. 

1948: Independiente Santa Fe
1948: Millonarios
1948: Atlético Nacional (Municipal)
2007: CD La Equidad (Bogotá)
2011: Rionegro Águilas Doradas [formerly CD Itagüí-Ditaires]
2012: Patriotas FC (Tunja)
2013: Alianza Petrolera (Barrancabermeja)
2015: Jaguares de Córdoba

Croatia

Since 1992.

1992: Dinamo Zagreb 
1992: Hajduk Split
1992: Osijek
1992: Rijeka
1997: Slaven Belupo Koprivnica
2009: Lokomotiva Zagreb  
2018: Gorica

NB: Osijek, Rijeka and Lokomotiva Zagreb all suffered relegation from the highest
    level in Yugoslavia, while Slaven Belupo and Gorica never played there.

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1992:

 30* Dinamo Zagreb (1992-2021 (running))
 30* Hajduk Split (1992-2021 (running))
 30* Osijek (1992-2021 (running))
 30* Rijeka (1992-2021 (running))
 24* Slaven Belupo Koprivnica (1997-2021 (running))
 22  Zagreb (1992-2013)
 21  Varteks Varazdin (1992-2012)
 12* Istra Pula (2009-2021 (running))
 12* Lokomotiva Zagreb (2009-2021 (running))
 12  Sibenik (1992-2003)

NB: also considering Yugoslavia, the following clubs had an uninterrupted series
    of 25 or more seasons in the top flight since 1946:
  
 75* Dinamo Zagreb (1946-2021 (running))
 75* Hajduk Split (1946-2021 (running))
 47* Rijeka (1974-2021 (running))
 40* Osijek (1981-2021 (running))

Cyprus

Since 1934.

1934: APOEL 
1953: Omonoia
1957: Apollon

NB: Çetinkaya (originally known as LTSK) were a founding member in 1934 and were never
      relegated before leaving the league in 1955, when they joined the inaugural league
      of Northern Cyprus (from which they were first relegated in 2020).

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1934:

 83* APOEL (1934-2021 (running))      [played 1 season in Greek first division]
 72* Anorthosis (1948-2021 (running))  
 67* Omonia (1953-2021 (running))     [played 1 season in Greek first division]
 63* Apollon (1957-2021 (running))
 58  AEL (1934-1996)                  [played 1 season in Greek first division]
 45  Pezoporikos (1948-1994)          [merged 1994 with EPA into AEK]
 45  ENP (1969-2014)
 41  Olympiakos (1938-1983)           [played 3 seasons in Greek first division]
 40  EPA (1948-1989)                  [played 1 season in Greek first division]
 26  Ethnikos (Achna) (1992-2018)
 24* AEL (1997-2021 (running))
 23  Nea Salamina (1955-1979)
 21  Alki (Larnaka) (1960-1981)
 21  Nea Salamina (1980-2001)

NB: the above series include the abandoned seasons of 1963/64 and 2019/20 (where
      applicable) as well as the seasons some clubs spent in the Greek league as
      champions of Cyprus.
    AEK, the result of the merger of first division clubs Pezoporikos and EPA,
      were first relegated in 2009; combined with the record of Pezoporikos, the
      club thus establisted a uninterrupted series of 60 top flight seasons.

Czech Republic

Since 1993.

1993: Slavia Praha
1993: Slovan Liberec
1993: Sparta Praha 
1994: Jablonec
1996: Teplice
2004: Mladá Boleslav
2020: Pardubice

NB: Jablonec, Pardubice, Slavia Praha, Sparta Praha and Teplice all suffered
    relegation from the highest level in Czechoslovakia, while Slovan Liberec
    and Mladá Boleslav never played there (however, both clubs which merged
    into Slovan Liberec, Slavoj and Jiskra, played there for one season).

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1993:

 28* Slavia Praha (1993-2021 (running))
 28* Slovan Liberec (1993-2021 (running))
 28* Sparta Praha (1993-2021 (running)) 
 27* Jablonec (1994-2021 (running))
 25* Teplice (1994-2021 (running))
 23  Baník Ostrava (1993-2016)
 21  Sigma Olomouc (1993-2014)
 18  Zrbojovka Brno (Boby) (1993-2011)
 17* Mladá Boleslav (2004-2021 (running))
 12* Slovácko (2009-2021 (running))
 11  Viktoria Zizkov (1993-2004)
 10  Marila Pribram (Dukla) (1997-2007)

NB: also considering Czechoslovakia, the following clubs had an uninterrupted series
    of 30 or more seasons in the top flight since 1925:

 56* Slavia Praha (1965-2021 (running))
 50  Sparta Praha (1925-1975)
 49  Banik Ostrava (1967-2016)
 46  Dukla Praha (1948-1994)

Czechoslovakia

Since 1925 and until 1993.  The nazi-enforced separation of Bohemia-Moravia
and Slovakia (between 1938 and 1945) is here considered as a separation of
the Czechoslovak league into two groups, and clubs from both are considered
to have played at the first level, as the first reunified league in 1945/46
included 20 clubs (split over two groups), among which were the top-11 of the
league of Bohemia-Moravia in 1943/44 and the top-6 of the Slovak league.

1948: Dukla Praha (ATK, UDA)
1985: DAC Dunajská Streda 

NB: the last Czechoslovak league season was held in 1992/93;
    Dukla Praha were relegated in the Czech Republic in 1994;
    DAC Dunajská Streda were relegated in Slovakia in 1998.

Clubs with an uninterrupted series of 20 or more seasons in the top flight
since 1925 and until 1993:

 50  Sparta Praha (1925-1975)
 49  Slovan Bratislava (SK) (1935-1985)
 45  Dukla Praha (1948-1993)
 28  Slavia Praha (1965-1993)
 27  Slavia Praha (1925-1951)
 26  Spartak Trnava (1964-1990)
 26  Banik Ostrava (1967-1993)
 21  SK Kladno (1925-1946)
 20  Bohemians Praha (1973-1993) [relegated in the Czech Republic in 1995]

Denmark

Since 1929. 

1982: Brřndby IF
2002: FC Nordsjćlland (Farum BK)

NB: FC Křbenhavn haven't been relegated since they took over B 1903's place in 1992; 
      however both B 1903 and the other feeder club, KB, were relegated several
      times (B 1903 three times and KB five times).
    Likewise, FC Midtjylland haven't been relegated since earning promotion in 2000,
      but as they took over the place of Ikast fS (who were relegated from the first
      level on three occasions) after they formed a superstructure with Herning Fremad
      (relegated from the first level once themselves), they are also not listed.

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1929:

 40* Brřndby IF (1982-2021 (running))
 36  Vejle B (1956-1992)
 35* AaB (1987-2021 (running))
 30  AGF (1977-2006)
 30  KB (1952-1982)
 29* FC Křbenhavn (1992-2021 (running))
 26  AB (1929-1960)
 26  BK Frem (1929-1960)
 23  B 1903 (1929-1957)
 23  Lyngby BK (1980-2002)
 23  OB (1976-1998)
 22* OB (1999-2021 (running))
 21* FC Midtjylland (2000-2021 (running))
 20  B 93 (1929-1954)
 20  Esbjerg fB (1949-1969)

Ecuador

Since 1957. 

1957: Barcelona
2015: Guayaquil City (River Ecuador)
2020: Orense

Egypt

Since 1948. 

1948: Al-Ahly
1948: Zamalek (Farouk)
2002: ENPPI
2004: Al-Jaish
2010: Misr al-Maqasah
2010: Semouha
2010: Wadi Degla

England

Since 1888. 

None.

Clubs with an uninterrupted series of 30 or more seasons in the top flight since 1888:

 95* Arsenal (1919-2021 (running))
 67* Everton (1954-2021 (running))
 59* Liverpool (1962-2021 (running))
 57  Sunderland (1890-1958)
 46* Manchester United (1975-2021 (running))
 44  Aston Villa (1888-1936)
 44  Blackburn Rovers (1888-1936)
 43* Tottenham Hotspur (1978-2021 (running))
 37  Sheffield United (1893-1934)
 34  Coventry City (1967-2001)
 32* Chelsea (1989-2021 (running))
 32  Newcastle United (1898-1934)

Faroe Islands

Since 1947; no proper promotion or relegation until 1975.

1947: HB
1980: Víkingur (GÍ)

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1947:

 75* HB (1947-2021 (running))
 63  KÍ (1947-2009) [includes 1964 season in which they withdrew]
 42* Víkingur (GÍ) (1980-2021 (running))
 40  TB (1949-1988)
 38  B36 (1947-1984)
 34* B36 (1988-2021 (running))
 25* NSÍ (1997-2021 (running))
 24  B68 (1981-2004)

NB: for a long time, there was no institutionalised relegation.

Finland

Since 1930.

2005: IFK Mariehamn

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1930:

 58* HJK (Helsinki) (1964-2021 (running))
 44  KuPS (Kuopio) (1949-1992)
 35  TPS (Turku) (1966-2000)
 23* Inter (Turku) (1999-2021 (running))
 23  Haka (Valkeakoski) (1950-1972)
 23  Haka (Valkeakoski) (1974-1996)
 23  MyPa (Anjalankoski) (1992-2014)
 20  Reipas (Lahti) (1961-1980)

France

Since 1932.

1974: FC Paris Saint-Germain

NB: Paris Saint-Germain played in the first division 1971/72, but were taken over by
      Paris FC before the end of the season.  The club had to restart with their amateur
      team, then in the 3rd division, kept the name, the colours and the president (but 
      changed grounds), earned promotion to the second division at the end of 1972/73, 
      and to the first at the end of 1973/74.

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1932:

 47* FC Paris Saint-Germain (1974-2021 (running))
 44  FC Nantes (1963-2007)
 35  FC Metz (1967-2002)
 34  AS Monaco (1977-2011)
 32  AJ Auxerroise (1980-2012)
 32* Olympique Lyonnais (1989-2021 (running))
 29  Olympique Lyonnais (1954-1983)
 29  FC Girondins de Bordeaux (1962-1991)
 29* FC Girondins de Bordeaux (1992-2021 (running))
 27* Stade Rennais (1994-2021 (running))
 25* Olympique Marseille (1996-2021 (running))
 23  FC Sochaux-Montbéliard (1964-1987)
 21  Olympique Marseille (1932-1959)
 21  AS Saint-Etienne (1963-1984)
 21* Lille OSC (2000-2021 (running))

Germany (GDR - East Germany)

Since 1949 and until 1991.

1984: Stahl Brandenburg

NB: Stahl Brandenburg has suffered relegation since the unification of Germany 1991.

Germany (FRG - (West) Germany)

Since 1963.

1965: Bayern München
1979: Bayer Leverkusen
1997: VfL Wolfsburg 
2008: TSG Hoffenheim
2011: FC Augsburg
2016: RB Leipzig
2019: Union Berlin

NB: Union Berlin suffered relegation from the highest level in East Germany.

Clubs with an uninterrupted series of 20 or more seasons in the Bundesliga since 1963:

 56* Bayern München (1965-2021 (running))
 55  Hamburger SV (1963-2018)
 45* Borussia Dortmund (1976-2021 (running))
 42* Bayer Leverkusen (1979-2021 (running))
 40* Werder Bremen (1981-2021 (running))
 39  VfB Stuttgart (1977-2016)
 35  1.FC Köln (1963-1998)
 34  Borussia Mönchengladbach (1965-1999)
 33  Eintracht Frankfurt (1963-1996)
 33  1.FC Kaiserslautern (1963-1996)
 30* Schalke 04 (1991-2021 (running))
 24* VfL Wolfsburg (1997-2021 (running))
 22  VfL Bochum (1971-1993)

NB: until their relegation in 2018, Hamburger SV, then the last ever present founding
      member, had always played at the highest possible level since their foundation by
      the merger of three older clubs in 1919.

Ghana

Since 1958; no promotion or relegation until 1961.

1958: Asante Kotoko 
1958: Hearts of Oak     
1986: Goldfields (now AshantiGold) 
2009: Aduana Stars 
2013: Inter-Allies  
2015: West Africa Football Academy
2017: Elmina Sharks
2018: Karela
2018: Techiman Eleven Wonders

NB: a first national league was installed in 1956 (including all 1958 founding members), 
      but all but two teams (Hearts of Oak and Eleven Wise) withdrew, and no championship 
      was played in 1957.  In 1970 eight provincial qualifying groups were formed, with 
      15 teams qualifying for the final "Upper League".  All unrelegated founder members
      (and none of the other unrelegated teams) qualified for it.

Greece

Since 1959.

1959: Olympiakos     
1959: Panathinaïkos
1959: PAOK (Thessaloniki)
2007: Asteras Tripolis
2017: Lamia
2019: Volos NFC

NB: APOEL (Lefkosia) made a guest appearance in the season 1973/74 as reigning champions
    of Cyprus and did not finish on a relegation place (the only Cypriot representatives
    ever to do so).

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1959:

 62* Olympiakos (1959-2021 (running))
 62* Panathinaïkos (1959-2021 (running))
 62* PAOK (Thessaloniki) (1959-2021 (running))
 54  AEK (1959-2013)
 38  Aris (Thessaloniki) (1959-1997)
 33  OFI (Iraklion) (1976-2009)
 33  Panionios (1959-1992)
 31  Ethnikos (Pireas) (1959-1990)
 31  Xanthi (1989-2020)
 30  Iraklis (Thessaloniki) (1981-2011)
 23  Panionios (1997-2020)

Honduras

Since 1965.

1965: Marathón 
1965: Motagua
1965: Olimpia
1965: Real Espańa
1965: Vida
2017: UPNFM  
2018: Real de Minas

Hungary

Since 1901.

2006: Paksi SE
2018: Kisvárda FC

NB: Ferencváros had their first level license revoked in July 2006, after
      having competed in the top flight since the first ever season in 1901.

Iceland

Since 1912; no proper promotion or relegation until 1955.

None.

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1912:

 77  Valur (1923-1999)
 63  KR (1915-1977)
 54  Fram (1912-1965)
 43* KR (1979-2021 (running))
 22  ÍA (1969-1990)
 21* FH (2001-2021 (running))

Ireland

Since 1921; no proper promotion or relegation until 1985.

1921: Bohemians 
1951: Saint Patrick's Athletic

Clubs with an uninterrupted series of 30 or more seasons in the top flight since 1921:

101* Bohemians (1921-2021 (running))
 84  Shamrock Rovers (1922-2005)
 73  Dundalk (1926-1999)
 71* Saint Patrick's Athletic (1951-2021 (running))
 54  Limerick (United/City) (1937-1991)
 50  Shelbourne (1936-1985)
 44  Drumcondra (1928-1972) [into Home Farm]
 44  Waterford (United) (1945-1989)

NB: for a long time, there was no institutionalised relegation.
    Bohemians played in the Irish League (now restricted to Northern Ireland) 
      before the associations split in 1920, and were relegated in 1911.
    Derry City played in the league of Northern Ireland every season from 1929
      until 1972 before being forced out in the 1972/73 season due to safety 
      issues; they entered the league of the Republic of Ireland in 1985 (at 
      the second level).  They were never relegated in either league until
      being demoted for financial reasons at the end of the 2009 season,
      together with Cork City who had not been relegated since first gaining
      access to the top level in 1984.
    Drumcondra amalgamated into Home Farm 1972; the resulting club (called
      Home Farm Drumcondra in 1972/73 before reverting to Home Farm 1973)
      played 15 more seasons at the top level until relegation in 1987, so
      combined the two clubs played 59 seasons without interruption in the
      top flight.

Israel

Since 1949.

1949: Maccabi Tel-Aviv

Italy

Since 1929.

1929: Internazionale (Ambrosiana) 
2013: Sassuolo
2020: Spezia

NB: Internazionale played all Italian championships since 1908.
    Until their forced relegation in 2006, Juventus played all Italian 
      championships since 1900 (although they were nominally relegated in 
      1911 and 1913 but remained at the first level in Piemonte anyway; 
      in addition, they didn't finish the championship in 1908). 

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1929:

 90* Internazionale (Ambrosiana) (1929-2021 (running))
 75  Juventus (1929-2006)
 69* Roma (1952-2021 (running))
 52  Fiorentina (1939-1993)
 51  Bologna (1929-1982)
 49  Milan (1929-1980)
 38* Milan (1983-2021 (running))
 33  Napoli (1965-1998)
 33* Lazio (1988-2021 (running))
 30  Lazio (1929-1961)
 29  Torino (1960-1989)
 26  Triestina (1929-1957)
 26* Udinese (1995-2021 (running))
 23  Sampdoria (1941-1966) [includes Dominante/Sampierdarenese]
 20  Vicenza (1955-1975)

Ivory Coast

Since 1960.

1960: Africa Sports
1960: ASEC (Abidjan) 
2009: AFAD (Djékanou)
2016: FC San-Pédro
2016: Williamsville Athletic Club (Adjamé) 
2018: Racing Club d'Abidjan        
2019: SOL FC (Abobo)

Japan

Since 1965.

2011: Sagan Tosu

Kosovo

Since 1996.  The first league since separation from Yugoslavia was held in
1991/92, but the top level was then split into four regional groups until
1995/96.  In 1997/98 and 1998/99 no league was held due to war.

1996: Prishtina
2000: Drenica Skenderaj
2020: Arbëria Dobrajë

NB: Prishtina played in all Kosovar championships since 1991 (also reaching the
    championship playoff in the four seasons between 1992/93 and 1995/96).  They
    were relegated from Yugoslav top level in 1988.

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1996:

 23* Prishtina (1996-2021 (running))
 21* Drenica Skenderaj (2000-2021 (running)) 
 20  Besa Pejë (1996-2018)
 13  Flamurtari Prishtinë (1996-2011)
 11  Trepça 89 (Minatori 89) Mitrovicë (1996-2009)
 11  Vëllaznimi Gjakovë (2002-2013)
 11* Trepça 89 Mitrovicë (2010-2021 (running)) 
 10* Drita Gjilan (2011-2021 (running)) 

Luxembourg

Since 1910.

2015: Una Strassen  
2016: Union Titus Pétange [merger CS Pétange (11 relegations) and FC Titus Lamadelaine]
2019: Blue Boys Mühlenbach [merged into RM Hamm Benfica 2020]

Malta

Since 1946; league started 1909 but until 1946 there was no proper promotion
or relegation.

1946: Hibernians
1946: Valletta
2019: Gudja United
2019: Santa Lucia
2019: Sirens
2020: Zejtun Corinthians

NB: a national league was installed in Malta in 1909, but a proper relegation mechanism 
      only in 1945.  No clubs have been ever present since 1909.  Hibernians were in
      the league without interruption since 1937, Valletta since 1945.

Mexico

Since 1943.

1943: América
1943: Guadalajara    
1953: Toluca
1962: Pumas (UNAM) 
1964: Cruz Azul 
1968: Santos (Laguna, Deportivo Neza, Santos)
2011: Tijuana
2019: Atlético de San Luis
2019: FC Juárez (bought license Lobos BUAP, promoted 2017)

Montenegro

Since 2006.

2006: Buducnost Podgorica
2006: OFK Petrovac
2006: Rudar Pljevlja
2006: Sutjeska Niksic
2006: Zeta Golubovci
2015: Iskra Danilovgrad
2019: FK Podgorica (promoted as Mladost Ljeskopolje)

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 2006:

 15* Buducnost Podgorica (2006-2021 (running))
 15* OFK Petrovac (2006-2021 (running))
 15* Rudar Pljevlja (2006-2021 (running))
 15* Sutjeska Niksic (2006-2021 (running))
 15* Zeta Golubovci (2006-2021 (running))
 14  Grbalj Radanovici (2006-2020)
 10  Lovcen Cetinje (2007-2017)

NB: also considering Yugoslavia and Serbia-Montenegro, the following clubs had an
    uninterrupted series of 15 or more seasons in the top flight since 1946:

 26  Buducnost Podgorica (1975-2001)
 21* Zeta Golubovci (2000-2021 (running))
 17* Buducnost Podgorica (2004-2021 (running))
 15* OFK Petrovac (2006-2021 (running))
 15* Rudar Pljevlja (2006-2021 (running))
 15* Sutjeska Niksic (2006-2021 (running))

Netherlands

Since 1956.

1956: Ajax
1956: Feyenoord (Feijenoord)
1956: PSV
1956: FC Utrecht (DOS)
2018: Emmen

NB: if we consider the regional first classes since 1888, the only team never to have
      been relegated since gaining promotion to the first level is Feyenoord (promoted, as 
      Feijenoord, in 1921).

Clubs with an uninterrupted series of 20 or more seasons in the eredivisie since 1956:

 65* Ajax (1956-2021 (running))
 65* Feyenoord (Feijenoord) (1956-2021 (running))
 65* PSV (1956-2021 (running))
 65* FC Utrecht (DOS) (1956-2021 (running))
 46  Sparta (1956-2002)
 41  Roda JC (Rapid JC) (1973-2014)
 34  FC Twente (1984-2018)
 32* Vitesse (1989-2021 (running))
 28* Heerenveen (1993-2021 (running))
 25  ADO (ADO Den Haag, FC Den Haag) (1957-1982)
 24  Go Ahead Eagles (1963-1987)
 24  Willem II (1987-2011)
 23* AZ (1998-2021 (running))
 21* FC Groningen (2000-2021 (running))
 20  MVV (1956-1976)
 20  NEC (1994-2014)

NB: the above series include the abandoned season of 2019/20 (where applicable).
    When MVV were relegated in 1976, they disappeared from the top level for the first time
      since the introduction of the southern first class in 1913 (61 seasons, not including
      inofficial war-time leagues).

(North) Macedonia

Since 1992.

1992: Vardar 
1998: Rabotnicki
2005: Renova 
2015: Shkupi
2017: Akademija Pandev
2019: Struga-Trim-Lum
NB: officially Shkupi are not considered the successors of Sloga Jugomagnat (who were
    relegated in 2005), although they were formed as a merger of Sloga with Albarsa.

NB: Vardar (7 times) and Rabotnicki (twice) both suffered relegation from the highest
    level in Yugoslavia, while Renova, Shkupi, Akademija and Struga never played there.

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1992:

 29* Vardar Skopje (1992-2021 (running))
 23* Rabotnicki Skopje (1998-2021 (running)) 
 21  Sileks Kratovo (1992-2013)
 18  Pobeda Prilep (1992-2010)
 16* Renova Cepciste (2005-2021 (running)) 
 14  Cementarnica (FCU) Skopje (1992-2006)
 13  Sloga Jugomagnat Skopje (1992-2005)
 11  Pelister Bitola (1992-2003)
 11* Skhendia Tetovo (2010-2021 (running)) 

NB: Vardar Skopje were relegated in 2011 but remained at the first level after a
    "merger" with promoted side Miravci.

NB: also considering Yugoslavia, only one club had an uninterrupted series
    of 25 or more seasons in the top flight since 1946:
  
 30* Vardar Skopje (1991-2021 (running))

Northern Cyprus

Since 1955.

2007: Cihangir
2020: Mesarya

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1955:

 60  Çetinkaya (1955-2020)
 45* Küçük Kaymakli (1976-2021 (running)) 
 33  Türk Ocagi (1958-1996)
 31  Magusa Türk Gücü (1955-1991)
 25  Dogan Türk Birligi (1955-1985)
 21  Yenicami (1956-1982)
 21  Gönyeli (1991-2012)
 20  Gönyeli (1969-1990)

Northern Ireland

Since 1890; for a long time, there was no institutionalised relegation.

1890: Cliftonville   
1890: Glentoran      
1890: Linfield    
2003: Dungannon Swifts

Clubs with an uninterrupted series of 30 or more seasons in the top flight since 1890:

120* Cliftonville (1890-2021 (running))
120* Glentoran (1890-2021 (running))
120* Linfield (1890-2021 (running)) 
 94  (Lisburn) Distillery (1890-1995)
 82  Glenavon (1911-2004)
 77  Portadown (1924-2008)
 68  Ards (1923-1998)
 62  Bangor (1927-1996)
 61  Coleraine (1927-1995)
 60  Ballymena (United) (1928-1995)
 56  Crusaders (1949-2005)
 36  Derry City (1929-1972)

NB: Belfast Celtic were twice forced out of the league for sectarian reasons
      (in 1920 as champions and in 1949 as runners-up) but never finished on
      a relegation place in the 38 seasons they played between 1896 and 1949.
    Derry City played in the league of Northern Ireland every season from 1929
      until 1972 before being forced out in the 1972/73 reasons due to safety
      issues; they were never relegated from the Northern Irish top level; they
      entered the league of the Republic of Ireland in 1985 (at the 2nd level).

Norway

Since 1962.

2017: Kristiansunds BK

Clubs with an uninterrupted series of 15 or more seasons in the top flight since 1961:

 45  Lillestrřm SK (1975-2019)
 43* Rosenborg BK (1979-2021 (running))
 29  Viking FK (1989-2017)
 28  SK Brann (1987-2014)
 20* Vĺlerenga IF (2002-2021 (running))
 17  Kongsvinger IL (1983-1999)
 16  Tromsř IL (1986-2001)
 15  IK Start (1973-1987)
 15* Strřmsgodset IF (2007-2021 (running))

Peru

Since 1926.

1928: Universitario (Lima) 
2004: Universidad San Martín de Porres
2009: Ayacucho FC [formerly Inti Gas Deportes]
2009: Sport Huancayo
2012: Cusco FC [formerly Real Garcilaso]
2016: Académia Cantolao
2017: EMD Binacional
2018: Alianza Universidad
2019: FC Carlos Stein
2019: Dep. Llacuabamba

Poland

Since 1927.

1995: Amica Wronki (defunct)

NB: Pogon Lwów were unrelegated until 1939, but after the war Lwów became part of the
      Soviet Union and the club were not re-created; Warszawianka also were unrelegated
      until 1939 but after the war played at lower regional levels until its football
      section was dissolved in 1971.
    Amica Wronki merged into Lech Poznan 2006 (who have not been relegated since).

Portugal

Since 1938; no proper promotion or relegation until 1948.

1938: SL Benfica
1938: FC Porto       
1938: Sporting CP
2015: CD Tondela
                     
NB: a national Portuguese league was already installed in 1934/35, but the championship
      was decided through the knock-out cup tournament.  In the first seasons, teams
      qualified for the national league through regional leagues rather than a 
      promotion/relegation system.

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1938:

 83* SL Benfica (1938-2021 (running))
 83* FC Porto (1938-2021 (running))
 83* Sporting CP (1938-2021 (running))
 48  Vitória SC (Guimarães) (1958-2006)
 46* SC Braga (1975-2021 (running))
 44  CF "Os Belenenses" (1938-1982)
 39  Boavista FC (1969-2008)
 36* CD Marítimo (1985-2021 (running))
 24  Vitória FC (Setúbal) (1962-1986)
 23  Académica (Coïmbra) (1949-1972)
 22  GD CUF (1954-1976)

Romania

Since 1934.

1947: Dinamo Bucuresti 
1947: Steaua (Armata, CCA)
2012: Viitorul Constanta   
2013: FC Botosani
2015: FC Voluntari
2017: Sepsi OSK Sfântu Gheorghe  
2018: AFC Hermannstadt (Sibiu) 
2019: Academia Clinceni

Russia

Since 1992.

1992: Spartak Moskva
1992: Lokomotiv Moskva
1992: CSKA Moskva 
2003: Rubin Kazan
2011: FK Krasnodar
2014: FK Ufa
2019: FK Sochi
2019: FK Tambov

NB: the three unrelegated founder members were all relegated at least once in the former
    Soviet Union.

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1992:
 
 29* CSKA Moskva (1992-2021 (running))
 29* Lokomotiv Moskva (1992-2021 (running))
 29* Spartak Moskva (1992-2021 (running))
 25* Zenit Sankt-Peterburg (1996-2021 (running))
 24  Dinamo Moskva (1992-2016)
 22  Krylya Sovetov Samara (1992-2014)
 18* Rubin Kazan (2003-2021 (running))
 15  Torpedo Moskva (1992-2006)
 14  Alania Vladikavkaz (Spartak) (1992-2005)
 14  Amkar Perm (2004-2018)
 13  Rotor Volgograd (1992-2004)
 13  FK Rostov (Rostselmash) (1995-2007)
 13* Ahmat (Terek) Grozny (2008-2021 (running))
 12  Saturn Ramenskoye (1999-2010)
 10* FK Krasnodar (2011-2021 (running))

NB: also considering the Soviet Union, the following clubs had an uninterrupted series
    of 20 or more seasons in the top flight since 1936:

 77  Dinamo Moskva (1936-2016) 
 65  Torpedo Moskva (1938-2006)
 46  Zenit Leningrad (1940-1989)
 43* Spartak Moskva (1978-2021 (running))
 38  Spartak Moskva (1936-1976)
 31  CSKA Moskva (1954-1984)
 31* CSKA Moskva (1990-2021 (running))
 30* Lokomotiv Moskva (1991-2021 (running))
 25* Zenit Sankt-Peterburg (1996-2021 (running)) 
 22  Krylya Sovetov Samara (1992-2014)

Scotland

Since 1890.

1890: Celtic
1905: Aberdeen

NB: Aberdeen did not play in the Scottish league during WW I (1917-1919),
      but did not lose membership.

Clubs with an uninterrupted series of 30 or more seasons in the top flight since 1890:

124* Celtic (1890-2021 (running))
115  Rangers (1890-2012)
109* Aberdeen (1905-2021 (running))
 80  Heart of Midlothian (1890-1977)
 61  Partick Thistle (1902-1970)
 45  Dundee (1893-1938)
 45  Saint Mirren (1890-1935)
 43  Motherwell (1903-1953)
 41  Kilmarnock (1899-1947)
 40  Hibernian (1933-1980)
 36* Motherwell (1985-2021 (running))
 35  Dundee United (1960-1995)
 35  Third Lanark (1890-1925)
 34  Hamilton Academicals (1906-1947)
 33  Airdrieonians (1903-1936)
 30  Falkirk (1905-1935)

Serbia(-Montenegro)

Since 1991, after the Croatian and Slovenian clubs had left the Yugoslav league;
note that the clubs from Bosnia-Herzegovina and Macedonia still were part of the
league structure in 1991/92 while Montenegro only started a separate league in 2006.

1991: Crvena zvezda Beograd
1991: Partizan Beograd
1991: Vojvodina Novi Sad
2015: Radnik Surdulica
2017: Macva Sabac
2018: Proleter Novi Sad
2019: TSC Backa Topola
2020: Zlatibor Cajetina

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1991:

 30* Crvena zvezda Beograd (1991-2021 (running))
 30* Partizan Beograd (1991-2021 (running))
 30* Vojvodina Novi Sad (1991-2021 (running))
 21  Hajduk Kula (1992-2013) [dissolved in 2013, never relegated]
 18  OFK Beograd (1998-2016)
 16  Zemun (1991-2007)
 13* Rad Beograd (2008-2021 (running))
 12  Rad Beograd (1991-2003)
 12* Spartak Subotica (2009-2021 (running))
 10  Buducnost Podgorica (1991-2001) [now Montenegro]

NB: does not consider moves between divisions 1/A and 1/B during the seasons from
    1993/94 to 1995/96, as all 20 clubs starting those seasons in either of them
    theoretically could win the title and thus should be considered a top level
    club (all of Hajduk Kula, Zemun, Rad Beograd and Buducnost Podgorica
    suffered at least one such relegation in the relevant series listed above,
    while Crvena zvezda, Partizan and Vojvodina never left 1/A).

NB: also considering Yugoslavia, the following clubs had an uninterrupted series
    of 25 or more seasons in the top flight since 1946:

 75* Crvena zvezda Beograd (1946-2021 (running))
 75* Partizan Beograd (1946-2021 (running))
 36  Vojvodina Novi Sad (1951-1986)
 34* Vojvodina Novi Sad (1987-2021 (running))   
 26  Buducnost Podgorica (1975-2001) [now Montenegro]

Slovakia

Since 1993.

1997: Ruzomberok
2009: Senica [acquired place Inter Bratislava]
2015: Zemplín Michalovce
2018: Sered
2019: Pohronie Ziar nad Hronom

NB: none of the above clubs ever played at the highest level in Czechoslovakia.

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1993:

 25* Zilina (1996-2021 (running))
 24* Ruzomberok (1997-2021 (running))
 19* Spartak Trnava (2002-2021 (running))
 15* Slovan Bratislava (2006-2021 (running))
 14  Inter Bratislava (1993-2007)
 14  Petrzalka (Artmedia) (1996-2010)
 12  Dukla Banská Bystrica (2003-2015)
 12* Senica (2009-2021 (running)) [acquired place Inter Bratislava]
 11  Slovan Bratislava (1993-2004)
 11  Trencín (1997-2008)
 11* Zlaté Moravce (2010-2021 (running))
 10  Kosice (1993-2003)
 10  Dubnica (2001-2011)
 10* Trencín (2011-2021 (running))

Slovenia

Since 1991.

1991: Celje
1991: Maribor
2009: Olimpija Ljubljana (2nd incarnation)
2018: Mura Murska Sobota (3rd incarnation)
2019: Bravo Ljubljana

NB: the first incarnation of Olimpija was dissolved in 2005;
    the first incarnation of Mura was dissolved in 2005 and the second in 2013.

NB: Maribor and the first incarnation of Olimpija both suffered relegation from the
    highest level in Yugoslavia, while Celje, Mura and Bravo never played there.

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1992:
 
 30* Celje (1991-2021 (running))
 30* Maribor (1991-2021 (running)) 
 28  Gorica (1991-2019) 
 18* Domzale (2003-2021 (running)) 
 17  Koper (2000-2017) 
 16  Primorje Ajdovscina (1993-2009) 
 14  Mura Murska Sobota (1st incarnation) (1991-2005)
 14  Olimpija Ljubljana (1st incarnation) (1991-2005)
 12* Olimpija Ljubljana (2nd incarnation) (2009-2021 (running)) 
 12  Rudar Velenje (1991-2003)
 12  Rudar Velenje (2008-2020)

Soviet Union

Since 1936 and until 1991.

1936: Dinamo Kyiv
1936: Dinamo Moskva 
1936: Dinamo Tbilisi 
1938: Torpedo Moskva
1988: Pamir Dushanbe 
1990: Metalurh Zaporizhzhja

NB: Dinamo Tbilisi entered the Soviet league in its second season, which,
      like the first, was played in 1936.  After the 1989 season they left
      the league to play in the newly formed domestic league of Georgia.
    After the 1991 season all successor states of the USSR started their own
      leagues; of the six clubs above, only Dinamo Kyiv (in the Ukraine) and
      Dinamo Tbilisi (in Georgia) have never been relegated since.

Clubs with an uninterrupted series of 20 or more seasons in the top flight
since 1936 and until 1991 (the 1976 season, which was split into a spring
and a fall tournament and had two champions but no mid-term promotion or
relegation, is counted as one):

 53  Dinamo Kyiv (1936-1991)
 53  Dinamo Moskva (1936-1991)
 50  Dinamo Tbilisi (1936-1989)
 50  Torpedo Moskva (1938-1991)
 46  Zenit Leningrad (1940-1989)
 38  Spartak Moskva (1936-1976)
 31  CSKA Moskva (1954-1984)
 26  Ararat Yerevan (1966-1991)

Spain

Since 1928.

1928: Athletic de Bilbao
1928: FC Barcelona        
1928: Real Madrid
2014: SD Éibar

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1928:

 90* Athletic (Bilbao) (1928-2021 (running))
 90* FC Barcelona (1928-2021 (running))
 90* Real Madrid (1928-2021 (running)) 
 63  Atlético (Madrid) (1934-2000)
 52  Valencia CF (1931-1986)
 40  Real Sociedad (1967-2007)
 34* Valencia CF (1987-2021 (running)) 
 31  Espanyol (1928-1962)
 31  Sevilla FC (1934-1968)
 26  Espanyol (1994-2020)
 24  Real Zaragoza (1978-2002)
 21  Sporting (Gijón) (1977-1998)
 20  Deportivo (La Coruña) (1991-2011) 
 20* Sevilla FC (2001-2021 (running))

Sweden

Since 1924.

2016: Östersunds FK
2020: Varbergs BoIS

Clubs with an uninterrupted series of 20 or more seasons in the Allsvenskan since 1924:
  
 63  Malmö FF (1936-1999)
 45* IFK Göteborg (1977-2021 (running))
 42  IFK Norrköping (1940-1982)
 31  Helsingborgs IF (1937-1968)
 28  IF Elfsborg (1926-1954)
 27  AIK (1924-1951)
 25* IF Elfsborg (1997-2021 (running))
 24  Helsingborgs IF (1993-2016)
 21  Östers IF (1968-1988)
 21* Djurgårdens IF (2001-2021 (running))
 21* Malmö FF (2001-2021 (running))
 20  Djurgårdens IF (1962-1981)

Switzerland

Since 1933.

None.

Clubs with an uninterrupted series of 25 or more seasons in the top flight since 1933:

 72  Servette FC (1933-2005)
 69  Lausanne-Sports (1933-2002)
 68  Grasshopper Club (1951-2019)
 47  BSC Young Boys (1950-1997)
 42  FC Basel (1946-1988)
 33  Xamax Neuchâtel (1973-2006)
 30  FC Zürich (1958-1988)
 29  FC Aarau (1981-2010)
 29  FC Sion (1970-1999)
 27  FC La Chaux-de-Fonds (1947-1974)
 27* FC Basel (1994-2021 (running))
 26  FC Zürich (1990-2016)

NB: Lausanne-Sports were refused a professional license for the 2002/03 season,
      ending their continuous presence in the Nationalliga A since its foundation
      in 1933.
    Servette FC were relegated in 2005 following bankruptcy, ending their series
      of playing all Swiss championships since they were first held in 1900.

Tunisia

Since 1955.

1955: Club Africain
1955: CS Sfaxien (formerly Club Tunisien)
1955: Etoile Sportive du Sahel (Sousse)
1955: Espérance Sportive de Tunis
2013: ES Métlaoui
2015: US Ben Guerdane
2019: AS Solimane

NB: ES Sahel did not participate in 1961/62 due to a one-year long dissolution;
    ES Tunis did not participate in 1970/71 due to a one-year long dissolution.

Turkey

Since 1959.

1959: Besiktas 
1959: Fenerbahçe      
1959: Galatasaray   
1974: Trabzonspor
2016: Alanyaspor
2017: Yeni Malatyaspor
2019: Gaziantep FK
2020: Hatayspor

Clubs with an uninterrupted series of 20 or more seasons in the top flight since 1959:

 63* Besiktas (1959-2021 (running))
 63* Fenerbahçe (1959-2021 (running))
 63* Galatasaray (1959-2021 (running))
 47* Trabzonspor (1974-2021 (running))
 37  Bursaspor (1967-2004)
 31  Ankaragücü (1981-2012)
 29  Gençlerbirligi (1989-2018)
 27  Gaziantepspor (1990-2017)
 25  Altay (1959-1983)

Ukraine

Since 1992.

1992: Dinamo Kyiv
1992: Shakhtar Donetsk
1996: Vorskla Poltava
2014: Olimpik Donetsk
2018: Desna Chernihiv
2019: Kolos Kovalivka
2020: Inhulets Petrove
2020: FK Mynaj
2020: Rukh Lviv

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1992:
 
 30* Dinamo Kyiv (1992-2021 (running))
 30* Shakhtar Donetsk (1992-2021 (running))
 26  Dnipro Dnipropetrovsk (1992-2017)
 25* Vorskla Poltava (1996-2021 (running))
 23  Tavrija Simferopol (1992-2014)
 21  Kryvbas Krivyi-Rih (1992-2013)
 20  Metalurh Zaporizhzhja (1992-2011)
 19  Arsenal Kyiv (CSCA-Borisfen, CSCA) (1995-2014)
 18  Metalurh Donetsk (1997-2015)
 15* Zorya Luhansk (2006-2021 (running))
 14  Karpaty Lviv (2006-2020)
 13  Karpaty Lviv (1992-2004)
 12  Metalist Kharkiv (2004-2016)
 10  Illichivets Mariupil (Metalurh) (1997-2007)
 10  Nyva Ternopil (1992-2001)

NB: also considering the Soviet Union, the following clubs had an uninterrupted series
    of 20 or more seasons in the top flight since 1936:

 83* Dinamo Kyiv (1936-2021 (running))
 49* Shakhtar Donetsk (1973-2021 (running))
 37  Dnipro Dnipropetrovsk (1981-2017)
 25* Vorskla Poltava (1996-2021 (running)) 
 23  Tavrija Simferopol (1992-2014)
 21  Metalurh Zaporizhzhja (1991-2011)
 21  Kryvbas Krivyi-Rih (1992-2013)

Uruguay

Since 1900.

1900: Peńarol 
1901: Nacional 
2016: Boston River

NB: only counting the professional league (since 1932), Nacional and Peńarol
      are both unrelegated founder members.
    Peńarol were expelled from the Uruguayan association (together with
      Central) on November 20, 1922, after playing matches against teams from 
      the Argentine 'Asociación Amateurs de Football' (a rival organisation to
      the 'Asociación Argentina de Football'); at that time, they had played 
      16 league matches.  In 1923 and 1924 they played in a league organised 
      by the 'Federación Uruguaya de Football' before the leagues were united 
      in 1926 (there was no league competition in 1925); they were therefore 
      active at the top level in every season since 1900.

Wales

Since 1992.

1992: Aberystwyth Town
1992: Newtown
1993: The New Saints (Llansantffraid)
2009: Bala Town
2016: Cardiff Metropolitan University
2019: Pen-y-Bont

Clubs with an uninterrupted series of 10 or more seasons in the top flight since 1992:

 29* Aberystwyth Town (1992-2021 (running))
 29* Newtown (1992-2021 (running))
 28* The New Saints (Llansantffraid) (1993-2021 (running))
 26  Bangor City (1992-2018)
 24  Carmarthen Town (1996-2020)
 18  Connah's Quay Nomads (1992-2010)
 18  Caersws (1992-2010)
 16  Rhyl (1994-2010)
 16  Port Talbot Town (2000-2016)
 15  Cwmbran Town (1992-2007)
 14  Haverfordwest County (1997-2011)
 13  Airbus UK Broughton (2004-2017)
 12* Bala Town (2009-2021 (running))
 11  Cefn Druids (1999-2010)
 10  Barry Town (1994-2004)

Yugoslavia

Since 1946 and until 1991.

1946: Crvena zvezda Beograd
1946: Dinamo Zagreb 
1946: Hajduk Split
1946: Partizan Beograd
1987: Rad Beograd 

NB: Hajduk were the only club to reach the final stages (i.e. quarterfinals or 
      final group stage) of the national championship in every season from its 
      start in 1923.  There were final playoffs from 1927 until 1930/31 in league 
      format; qualifying for this was based on regional competitions.  In 1932/33 
      a national league with promotion and relegation was introduced, but there 
      was no championship in 1933/34 and one decided by a knock-out tournament in 
      1935/36.

NB: the last Yugoslav league season was held in 1990/91;
    Hajduk Split and Dinamo Zagreb have never been relegated in Croatia since;
    Rad Beograd were relegated in Serbia-Montenegro in 2003;
    Crvena zvezda Beograd and Partizan Beograd have never been relegated in
      Serbia-Montenegro or Serbia since the split(s).

Clubs with an uninterrupted series of 20 or more seasons in the top flight
since 1946 and until 1991:

 45  Crvena zvezda Beograd (1946-1991)
 45  Dinamo Zagreb (1946-1991)
 45  Hajduk Split (1946-1991)
 45  Partizan Beograd (1946-1991)
 36  Vojvodina Novi Sad (1951-1986)
 36  Velez Mostar (1955-1991)
 33  Sarajevo (1958-1991)
 23  Radnicki Nis (1962-1985)
 22  Sloboda Tuzla (1969-1991)
 20  OFK Beograd (1959-1979)

NB: all Bosnian and Serbian clubs listed above played at the top level in 1991/92
    in the "remainder of Yugoslavia", here included as Serbia-Montenegro.

NB: the records above are up to date as of December 29, 2020.

About this document

With thanks to Lars Alexandersson, Estebán Ávila, Thierry Berthou, Diego Cervini, Mike Dryomin, Sřren Elbech, Eoin Hurley, Vidar Jortveit, Spyros Karasoulous, Igor Kramarsic, Goran Mancevski, Brunislav Matasovic, Gwidon Naskrent, Frédéric Pauron, Heikki Pietarinen, Ricardo Pontes, James Ross, Tarek Said, Martín Tabeira and Andreas Werner for additions and corrections.

Prepared and maintained by Karel Stokkermans for the Rec.Sport.Soccer Statistics Foundation

Author: Karel Stokkermans (karel.rsssf@gmail.com
Last updated: 29 Dec 2020

(C) Copyright Karel Stokkermans and RSSSF 1996/2020
You are free to copy this document in whole or part provided that proper acknowledgement is given to the author. All rights reserved.