Polina Alekseyevna Leykina (Russian: Полина Алексеевна Лейкина; born 20 September 1994) is a Russian professional tennis player. She has career-high WTA rankings of 184 in singles, achieved on 1 August 2016, and 230 in doubles, set on 28 December 2015. Leykina has won nine singles titles and 15 doubles titles on the ITF Women's Circuit. She made her WTA Tour main-draw debut at the 2016 Grand Prix SAR La Princesse Lalla Meryem, in the doubles event partnering Yulia Putintseva.