Oksana Kalashnikova (Georgian: ოქსანა კალაშნიკოვა, romanized: oksana k'alashnik'ova, pronounced [okʰsana kʼalaʃnikʼova]; born 5 September 1990) is a Georgian professional tennis player who specializes in doubles. She has a career-high doubles ranking by the WTA of world No. 42, achieved on 11 September 2023. She also reached a best singles ranking of No. 156 on 7 June 2010, before suffering a lower back injury that led her to focus primarily on doubles.

Kalashnikova has won seven WTA Tour doubles titles and four doubles titles on the WTA Challenger Tour, as well as five singles and 25 doubles titles on the ITF Circuit.

Playing for Georgia Billie Jean King Cup team since 2007, Kalashnikova has a win–loss record of 29–17 (as of July 2025).

Kalashnikova had a remarkable junior career. At age 15, she won the prestigious 2005 Orange Bowl and peaked at No. 11 in the ITF jr. world rankings later that year. The following season she reached the US Open girls' singles semifinal, notably defeating Simona Halep in straight sets, before losing to eventual champion, Kristína Kučová.

Kalashnikova entered the ITF tournament in Astana, where she won the doubles event with Marta Sirotkina against twin sisters Lyudmyla and Nadiia Kichenok.

In November, she and Nina Bratchikova won the doubles title at the Royal Indian Open.

She reached the third round of the French Open on her debut at this major, partnering Alicja Rosolska.

Kalashnikova won her first WTA doubles title at the 2013 Baku Cup, partnering Irina Buryachok against Eleni Daniilidou and Aleksandra Krunić.