1. Fußballclub Union Berlin e. V., commonly known as Union Berlin (), is a professional German football club based in Berlin.
The club's origins can be traced to 1906, when its predecessor FC Olympia Oberschöneweide was founded. During the Cold War, Union was based in East Berlin, joining the German league structure upon the reunification of the country in 1990. From 2009 until 2019, they competed in the 2. Bundesliga, the second tier of German football. In 2019, Union won promotion to the Bundesliga for the first time in the club's history. In 2021, Union finished seventh in the league to qualify to the inaugural UEFA Europa Conference League. In 2022, the club qualified for the UEFA Europa League by finishing fifth. The following season, the club qualified for the Champions League for the first time in their history, by finishing fourth in the Bundesliga.
The home ground of the club is the Stadion An der Alten Försterei. It is the second-largest in the German capital and has been home to Union Berlin and its forerunners since it opened in 1920.Stadium at the Old Forester's House . Retrieved 5 March 2016. The stadium also hosts concerts and the annual Weihnachtssingen Christmas carols event.Stadion An der Alten Försterei, Football Tripper. Retrieved 5 March 2016.
Union Berlin has 72,172 official members.Club Membership. Retrieved 10 July 2026. The club has become well known for its enthusiastic and creative fan base and its chant "Eisern Union" (Iron Union).Bundesliga and beyond – Union Berlin. Retrieved 5 March 2016.Inside Union Berlin's miracle. Retrieved 19 October 2022.
History First foundation (1906–1945) The name 1. FC Union Berlin was used by two football clubs that shared a common origin as FC Olympia Oberschöneweide, founded in 1906 in Oberschöneweide, which at that time was a suburb of Berlin. The side took on the name SC Union 06 Oberschöneweide in 1910. Union was one of Berlin's premier clubs in the interwar period, regularly winning local championships and competing at the national level, including an appearance in the 1923 German championship final which they lost 0–3 to Hamburger SV.
Early on, the team was nicknamed "Schlosserjungs" (English: metalworker-boys) because of their then all blue kit, reminiscent of the typical work clothing worn in the factories of the industrial Oberschöneweide district. The popular cry of Union supporters – "Eisern Union!" (Iron Union) – also emerged at this time.'Iron Union!': East Berlin's Favourite Football Team, Beyond The Last Man, 18 April 2018 Since its foundation the club has had a distinct working-class image, in contrast to other local clubs with more middle-class origins, such as Viktoria 89 Berlin, Blau-Weiß 90 Berlin, BSV 92 Berlin or Tennis Borussia Berlin.
In 1933, German football was reorganized under the Third Reich into 16 top-flight divisions known as Gauligen. Oberschöneweide became part of the Gauliga Berlin-Brandenburg, where they generally earned middling, unexceptional results. They were relegated in 1935 and returned to first division play in 1936 after only one season's absence. In 1940, the team finished first in Group B of the division and then defeated Blau-Weiß 90 (1–2, 3–0) to win the overall division title. That advanced the club to the national playoffs where they were put out by Rapid Wien in the opening group round (2–3, 1–3). Union resumed its place as an average side. They were relegated again in 1942 and played the final war-shortened Gauliga season in 1944–45.
Dissolution and split (1945–1961)
After World War II, occupying Allied authorities ordered the dissolution of all organizations in Germany, including sports and football associations. A new sport community called SG Oberschöneweide was formed in late 1945 and it played in the City League organized immediately after the war which had four regional departments. The team did not qualify to the newly created Oberliga Berlin (I) in 1946 after a poor season, but was promoted in 1947, won the division title right away and regained club status as SG Union Oberschöneweide during 1948–49.
The club finished the 1949–50 season in second place in Berlin and qualified to take part in the national final rounds. However, escalating Cold War tensions led Soviet authorities to refuse the team permission to travel to take part. Two Union teams then emerged as most players and coaches emigrated west to form Sport-Club Union 06 Berlin which took part in the scheduled playoff match in Kiel against Hamburger SV, losing 0–7.Ein Spiel für Verein und Flüchtlinge Berliner Zeitung, published: 4 January 2015 Retrieved 18 November 2015SC Union 06: Die Erben der Schlosserjungs Der Tagesspiegel, published: 25 June 2012. Retrieved 18 November 2015
The players remaining in the east carried on as SG Union Oberschöneweide while a number of players who had emigrated west to form SC organized a third side called Berliner Ballspiel-Club Südost. The western team was a strong side until the construction of the Berlin Wall in 1961, drawing huge crowds to matches in the Olympiastadion. The division of the city led to a change of fortunes for BBC Südost which plays today in the lower divisions before meagre crowds.
Restart as Union Berlin (1961–1990)
The eastern branch of the club went through a number of name changes: Union Oberschöneweide (1950), BSG Motor Oberschöneweide (1951), SC Motor Berlin (1955), TSC Oberschöneweide (1957), TSC Berlin (1963) – finally becoming the football club 1. FC Union Berlin in 1966.
1. FC Union Berlin was founded during the reorganization of East German football in December 1965 and January 1966, when ten dedicated football clubs were created. However, the football department of TSC Berlin was originally not taken into account. Only two clubs were planned for East Berlin, to be formed from the football departments of ASK Vorwärts Berlin and SC Dynamo Berlin. This was already contrary to the original plan, which had envisioned only one football club per district. And the football department of TSC Berlin was only playing in the second tier DDR-Liga at the time.
1. FC Union Berlin was founded on the initiative of the powerful Herbert Warnke. Herbert Warnke was the chairman of the state-controlled national trade union FDGB and a member of the SED Politburo. Another SED politician and Politburo member who pushed for the founding of 1. FC Union Berlin was the SED First Secretary in East Berlin Paul Verner. Both ASK Vorwärts Berlin and SC Dynamo Berlin were associated with the armed organs (). Warnke therefore argued for the creation of a third "civilian club" for the working people in East Berlin. He would become a passionate fan of 1. FC Union Berlin and a sponsoring member of the club.
1. FC Union Berlin was established in the middle of one of the largest industrial centers in East Germany. 1. FC Union Berlin was initially supported by the FDGB. The intention of the SED to win the support from FDGB for 1. FC Union Berlin was likely well thought out. The FDGB unified all workers in East Germany and therefore was most likely to carry the proper identity for a club of the working people. The club was founded in a ceremony in the clubhouse of VEB Transformatorenwerk Oberschöneheide "Karl Liebknecht" (TRO) in Oberschöneweide on 20 January 1966. The founding of the club was organized by the then-SED First Secretary in Köpenick, Hans Modrow. Like Herbert Warnke, Hans Modrow would be a sponsoring member of the club. SED Politburo member Paul Verner held a speech at the inaugural meeting. SED Politburo member Verner would be a very strong sympathizer of the club.
1. FC Union Berlin was the only football club not playing in the DDR-Oberliga at the time of its founding. As a dedicated football club, it was elevated into the upper tier of privileged elite clubs. The official sponsor of 1. FC Union Berlin was the state-owned combine VVB Hochspannungsgeräte und Kabel, which implemented its support through VEB Kabelwerk Oberspree, VEB Transformatorenwerk Oberschöneweide and other local state-owned enterprises. The first club president was the general director of VVB Hochspannungsgeräte und Kabel, Werner Otto, and his deputy was the SED Second Secretary in East Berlin, Hans Wagner. Even as a "civilian club", 1. FC Union Berlin was part of the state sports political system. The most important positions on the board of 1. FC Union Berlin would exclusively be held by directors of state-owned factories or SED representatives. 1. FC Union Berlin was state-funded and all club decisions had to be reported to the all-powerful central sports agency DTSB. In turn, the DTSB stood under direct control of the SED Central Committee.
The support from the FDGB ended when Herbert Warnke was replaced by Harry Tisch as the chairman of the FDGB in 1975. Tisch had begun his political career in Rostock and instead gave his support to FC Hansa Rostock. This event was remarkable, as it revealed the large influence that high-ranking politicians exerted on football in East Germany. 1. FC Union Berlin would then have to rely on support from the regional district management () of the ruling SED party in East Berlin and local state-owned enterprises. The main sponsors would be VEB Kabelwerk Oberspree (KWO), VEB Transformatorenwerk Oberschöneweide (TRO) and VEB Werk für Fernsehelektronik (WF). 1. FC Union Berlin developed a bitter rivalry with BFC Dynamo, which was supported by the Stasi. While their arch rivals won 10 titles in a row, Union yo-yoed between the DDR-Oberliga and the DDR-Liga with very little success. Union managed to win the East German Cup in 1968 when they defeated FC Carl Zeiss Jena 2–1 although they lost in their second cup appearance in 1986 to 1. FC Lokomotive Leipzig by a score of 1–5.
The East German state-owned film studio DEFA produced a documentary about the supporters of 1. FC Union Berlin in 1989. The documentary is called And Fridays at the Green Hell and follows a group of supporters of 1. FC Union Berlin to both home and away matches during the 1987–88 season.
2. Bundesliga era (1990–2019)
After German reunification in 1990, the team continued to perform well on the field, but almost collapsed financially. They managed to hang on and find sponsorship, but only after winning their division in both 1993 and 1994 and each time being denied a license to play in the 2. Bundesliga due to their financial problems. The club had another close brush with financial failure in 1997.
Union again came close to advancing to the 2. Bundesliga in 1998–99 and 1999–2000, but were disappointed. They were finally successful in 2000–01, under Bulgarian manager Georgi Vasilev, easily winning the Regionalliga Nord (III) and moving up a division to become the city's second most popular side. That same year they appeared in the final of the German Cup where they lost 0–2 to FC Schalke 04, and advanced as far as the second round in UEFA Cup before being put out by Bulgarian side PFC Litex Lovech. The club slipped to the Regionalliga Nord (III) in 2004–05 and then to the NOFV-Oberliga Nord (IV) in 2005–06, but returned to third division play after capturing the Oberliga title. In 2008–09, Union became one of the founding clubs of the new 3. Liga, and its inaugural champion, securing first place and promotion to the 2. Bundesliga on 10 May.