Alexander Oleinik (Ukrainian: Олександр Олегович Олійник; born March 8, 1986) is a Ukrainian professional Kickboxing and Muay Thai fighter who competes in the middleweight, light heavyweight and cruiserweight divisions.

He first came to prominence due to his successful amateur career by winning IFMA European and World Championships in 2010.

He continued his professional record through 2011 where he won the 2011 Tatneft World Cup in division under 80 kg.

[1] He has proved it with wins over four top 10 fighters in Sem Braan, Constantin Țuțu, Alexander Stetsurenko and Dmitry Shakuta.

Professional debut: July 7, 2007 (Brezno, Slovakia) 51 fights, 44 won, 16 KOs, 7 lost The ninefold world champion on kickboxing and muay thai among amateurs under versions WAKO, IFMA and ISKA.