Hannoverscher SC

After the end of World War I, Hannoverscher SC 02 reached the highest league, the Südkreisliga. In 1924 and 1925, the team was runner-up behind Arminia Hannover and Eintracht Braunschweig. One year later, the HSC 02 won its division, but lost the championship match against Arminia Hanover 1–2. As runner-up, a qualification match for the North German final round was played, which was won 6–2 against Bremer SV. In the final round of the North German Championship, after a 1–2 opening defeat against Hamburger SV, they won 2–1 against Altona 93 and were chosen by the sports press as the secret favorite. After two more defeats against Arminia Hannover and Holstein Kiel, the team finished fourth.

FV Sport Hannover also belonged to the founding members of the Südkreisliga in 1919, but mostly played against relegation. After the merger with SV Rot-Weiß, who did not make it into the highest league, the team was able to establish itself in the midfield of the league. In 1926 and 1927 FC Sport reached fourth place. In the first season under the new name Spielvereinigung in 1897, the team achieved the North German Championship. After a close 3–2 victory at Eimsbütteler SV, they had to accept a 0–8 defeat against Holstein Kiel in the quarter-finals. One year later, the team lost to Kiel with the same result. In 1932, the Spielvereinigung retired from the Oberliga Südhannover-Braunschweig.

Two years later, together with Borussia Harburg, the club was promoted to the Gauliga Niedersachsen, which was introduced in 1933. After one season, they were relegated from the first league again. In the first attempt at promotion in 1940, the team failed against I. SC Göttingen. Two years later, Nebeltruppe Celle landed ahead of them. Only in the third attempt in 1943 were they successfully promoted to the Gauliga Südhannover-Braunschweig, to which they belonged until the end of the war.

After World War II, the club settled at Constantinstraße, where the sports field was located between a gasometer and a rubbish dump. The HSC's reputation as the "Eleven of the Gasometer" dates back to this period. In 1946, the HSC had to play qualifying matches for a place in the Oberliga Niedersachsen-Süd against the local rival Werder Hannover, which the HSC lost. Three years later, they belonged to the founding members of the Amateuroberliga Niedersachsen-West. After they had to transfer to the eastern division in 1951, they were promptly relegated. At this time, financial worries plagued the association. According to legend, the treasurer of the club fled with the income from a friendly match against Arminia Hannover to save the money from the bailiff.

In 1956, the HSC won the Amateurliga Hannover and managed to be promoted to the second-tier Amateuroberliga. They did not get past midfield positions or relegation matches. By the league reform of 1964, the new Verbandsliga was missed, before being relegated back to the Bezirksliga in 1969. Under the leadership of coach Werner Müller, they were promoted in 1970 to the Verbandsliga Süd. There they were runners-up after losing 0–2 to Preußen Hameln in Stadthagen. In 1972, the championship was won and the HSC made it into the then third-tier Landesliga Niedersachsen. With Volker Finke, a future Bundesliga coach played for the HSC team. In the Lower Saxony top-tier league they played against relegation. In 1974, relegation was avoided in second-to-last place only because three teams were promoted into the Oberliga Nord.

For three years, they fought against relegation with a young team, before being relegated in 1977. One year later, the HSC was passed through to the Bezirksliga with only five points and 104 conceded goals. In 1991, the HSC was promoted to the Landesliga West and three years later they qualified for the Niedersachsenliga West. In the 1995–96 season, the HSC had chances of promotion to the Oberliga, but only finished third at the end of the season. Two years later, the team was relegated from the Niedersachsenliga and was promptly passed on down to the Bezirksliga. In 2012, the team lost their promotion to the Landesliga to TuS Kleefeld with a 1–1 draw on the last matchday; promotion was achieved in the following season. In 2016, the HSC secured its promotion to the Oberliga Niedersachsen two matchdays before the end of the season, but were relegated after only one year. In 2018, the HSC was able to directly rejoin the Oberliga before being promoted to the fourth-tier Regionalliga Nord one year later.