Grazer Athletiksport Klub, better known simply as Grazer AK, is an Austrian sports club based in the city of Graz in the federal state of Styria. 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 during the 2012–13 Regionalliga Mitte Season in Autumn 2012. It has since been revived and returned to Austrian Second League in 2019.

Graz is the capital of Styria and the second-largest city in Austria, after Vienna. As of 1 January 2024, Graz had a population of 339,810. In 2021, the population of the Graz larger urban zone (LUZ) stood at 665,390 based on principal-residence status. Graz is known as a college and university city, with four colleges and four universities. Combined, the city is home to more than 60,000 students. Its historic centre (Altstadt) is one of the best-preserved city centres in Central Europe.