Original Hummel football shirt Kalmar FF

Kalmar Fotbollförening, more commonly known as Kalmar FF, is a Swedish professional football club based in Kalmar. The club is affiliated to Smålands Fotbollförbund and play their home games at Guldfågeln Arena. Formed on 15 June 1910, the club have won one national championship title (2008) and three national cup titles (1981, 1987, and 2007).

In total, KFF has made 35 seasons in Allsvenskan since the debut in the 1949. The club can be found at the 13th position in the all-time Allsvenskan standings, is one of 14 Swedish football clubs that have become both national champions and national cup champions, and one of 14 clubs that have always played in one of the three highest Swedish national football leagues.

Kalmar FF's main local rivals are Östers IF and during the 1980s and 90s Kalmar AIK.