Andriy Oleynyk (born 22 October 1983 in Brovary, Ukraine) is a backstroke and a medley swimmer from Ukraine,[2] who won the bronze medal in the men's 4x100 m medley relay event at the 2006 FINA Short Course World Championships in Shanghai, China.

[5] In the following years, he won a silver medal in 4x50 m medley relay at the 2005 European Short Course Swimming Championships, held in Trieste, Italy.

[7] In 2006, he won the bronze medal in the men's 4x100 m medley at the 2006 FINA Short Course World Championships in Shanghai, China.

[8] At the 2007 Summer Universiade, held in Bangkok, Andriy reached a bronze medal in 4 × 100 m medley relay.

[9] He also won two bronze medals in 50 m backstroke and 4 × 100 m medley relay at the 2007 Military World Games, held in Hyderabad.