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.
+100kg
-100kg
1 2010-04-03 Peter Aerts - Netherlands
2009-03-28 Gökhan Saki - Turkey
1 2008-06-29 Glaube Feitosa - Brazil
2007-04-28 Yusuke Fujimoto - Japan