Grazer AK, founded 18 August 1902 as Grazer Athletiksport Klub (in Austria the abbreviation GAK is more common), is an Austrian sports club, from the city of Graz in the federal state of Styria (Steiermark). The football section used to be one of the most popular Austrian clubs, mostly successful in the decade 1995–2005. The other sections are basketball, diving and tennis, which however all act as separate legal entities. The "GAK" football section was folded in 2012. It has since been revived and plays in the amateur divisions of Austrian football. The club has a big rivalry with neighbours Sturm Graz.