The history of FC Admira Wacker is a tale of two once-rival Viennese clubs whose fates only became intertwined in 1971. SK Admira was founded on 17 June 1905 in the working-class district of Jedlesee from the merger of two smaller associations, while SC Wacker was established in 1907 in another part of Vienna, Obermeidling. The two clubs developed separately for decades before, in 1971, facing financial troubles and relegation, Wacker merged with Admira to form FC Admira/Wacker Wien — an entity that became the legal successor of both predecessors, inheriting their combined trophy record.
It was the pre-war Admira that stood among the strongest clubs in interwar Central Europe, and its most remarkable episode remains the brief but fruitful stint of Josef Bican — a forward regarded by many statisticians today as the most prolific goalscorer in football history. Bican joined the club in the summer of 1935 following a bitter contract dispute with Rapid Vienna, and spent two seasons at Admira (1935–36 and 1936–37), helping it win two consecutive Austrian championships, before moving to Slavia Prague at the start of 1937, where his phenomenal scoring talent finally reached its full potential. A year earlier, in 1934, Admira had also reached the final of the Mitropa Cup, losing the two-legged tie to Italy's Bologna 4-7 on aggregate despite a 3-2 win in the first leg played in Vienna.
In total, SK Admira won eight Austrian championships and five Austrian Cups during its history, while SC Wacker could boast one league title and one cup triumph — a combined record that passed to the merged club. After years of sporting instability and a further merger, this time in 1997 with VfB Mödling from a nearby town, today's FC Admira Wacker Mödling was formed, with its base relocated to the Südstadt district of Maria Enzersdorf. The unified club achieved its greatest European success in 1990, reaching the quarter-finals of the UEFA Cup Winners' Cup.
Today, Admira plays at the purpose-built stadium in Südstadt, constructed between 1965 and 1967 and holding around 10,600 spectators, now known as the Datenpol Arena. After years of alternating between the top flight and the 2. Liga, the club has competed at the second tier of Austrian football since the 2023–24 season, still carrying forward the legacy of two capital-city clubs that once ranked among the elite of Central European football.