Karina Smirnoff, Ukrainian-American dancer
Karina Smirnoff (Russian: Карина Смирнова; born January 2, 1978) is a Soviet-born American professional ballroom dancer of Ukrainian origins. She is known as a professional dancer on Dancing with the Stars, where she won the thirteenth season with army veteran and soap opera star J. R. Martinez.

She has also won two runner-up titles, a semifinal title, and several quarterfinal titles.

She is a five-time U.S. National Champion, World Trophy Champion, and Asian Open Champion. She has won the title at the UK Open, is a three-time champion at the US Open, two-time champion at the Asian Open, five-time champion at the Dutch Open, and five-time US National Professional Champion. She has taken second at the British Open Blackpool Dance Festival, and the first woman to reach the British Professional Final with three different partners.