This is the list of all K-1 champions. Included are the K-1 World Grand Prix and K-1 World MAX champions as well as all the preliminary tournament winners from the events promoted by K-1 and FEG (1993-2011) and later by K-1 Global (2012–present) following the former's dissolution. The list does not contain K-1's mixed martial arts branch Hero's and DREAM champions.