Hamburger Sport-Verein e.V., commonly known as Hamburger SV, Hamburg or HSV, is a German sport club based in Hamburg, its largest branch being its football department. Although the current HSV was founded in June 1919 from a merger of three earlier clubs, it officially traces its origin to 29 September 1887 when the first of the predecessors, SC Germania, was founded. HSV's football team had the distinction of being the only team that had played continuously in the top tier of the German football league system since the founding of the club at the end of World War I. It was the only team that played in every season of the Bundesliga since its foundation in 1963, until 2018 when the team were relegated for the first time in history.
HSV has won the German national championship six times, the DFB-Pokal three times and the League Cup twice. The team's most successful period was from the mid-1970s until the mid-1980s when, in addition to several domestic honours, they won the 1976–77 European Cup Winners' Cup and the 1982–83 European Cup. The outstanding players of this period were Horst Hrubesch, Manfred Kaltz, and Felix Magath, all of which were regulars in the German National Team.