King of Kings, or KOK, was founded in 2009 by Donatas Simanaitis and is headquartered in Vilnius, Lithuania. It is primarily a European kickboxing promotion, and its growth has come through repeated expansion across multiple countries in the Baltic, Eastern European, and broader continental market. KOK’s value lies in being geographically broad while still feeling regionally grounded rather than trying to imitate a global American model. It is one of those promotions that has quietly built a durable cross-border European fight footprint.

