Kalmar Fotbollsförening, usually known as Kalmar FF, was founded in January 1910. Initially operating as IF Göta, the team adopted its current name in 1927. Nicknamed the Red Brothers, Kalmar FF have enjoyed some noteworthy success in domestic competitions. The side's two main local rivals are Östers IF and Kalmar AIK.
The club has enjoyed its most notable period of success in the years since the turn of the 21st century. In the 2007 season, Kalmar finished as runners up in the league and reached the final of the Svenska Cupen, where they beat IFK Göteborg 3-0 to lift the trophy. Then, the following season saw the club achieve their greatest success to date, as they won the Allsvenskan to become Swedish champions for the first time. As a result, they gained entry into the qualification round of the UEFA Champions League.
Aside from their sole league title win, Kalmar have won the Svenska Cupen on three occasions, with the other two victories coming in 1980–81 and 1986–87. In addition, they lifted the Svenska Supercupen for the first time in 2009. Kalmar have played in several continental competitions, including the UEFA Cup and the UEFA Cup Winners' Cup, but have failed to reach the later stages of either tournament.
The list of notable players to represent the club include names like Patrik Ingelsten, who was the side's top goal scorer during their successful league campaign in 2008, and Viktor Elm, whose impressive performances for the club earned him a call up to the Swedish national team in 2008.
Kalmar FF play their home matches at Guldfågeln Arena, which first opened its doors in 2011. The stadium is utilised by the Swedish under-21s team and can hold a maximum of 12,182 supporters. This capacity is reduced to 11,800 for competitions which require venues to be all-seated.