Tvillingderbyt (Swedish: [ˈtvɪ̂lːɪŋˌdærbʏt], "The Twin Derby") is a football fixture in Stockholm, Sweden, between cross-town rivals AIK Stockholm and Djurgårdens IF. Both clubs were founded in Stockholm in 1891, AIK was first with Djurgårdens IF following three weeks later, but they started playing football in 1896 (AIK) and 1899 (Djurgårdens IF) respectively.