AIK Fotboll, more commonly known simply as AIK, an abbreviation for Allmänna Idrottsklubben, is a Swedish football club from Stockholm, competing in Sweden's highest tier, Allsvenskan. AIK's home ground is Friends Arena, located in Solna, a municipality in Stockholm bordering the City Centre. The club was formed in 1891 and the football department was formed in 1896.
Reigning league champions, AIK has 12 championship titles and is third in the all-time Allsvenskan table. The club holds the record for having played the most seasons in the Swedish top flight. In addition, in this century AIK is the club that has finished top three in Allsvenskan the most times, and has an ongoing streak of having finished top three six times in a row. AIK is consequently the Swedish club that has qualified for UEFA club competitions the most times during said period.
Affiliated with the Stockholm Football Association, AIK is the only side from Stockholm to have qualified for the group stage of a UEFA competition.