Maryna Leonidivna Kolb (; born 13 March 1997) is a Ukrainian tennis player.
She has a career-high WTA doubles ranking of world No. 173, she achieved on 9 September 2024.
Maryna was born in the city of Yevpatoriya. Her older sister Nadiia, who is also a professional tennis player, is her regular doubles partner.
Maryna made her WTA Tour main-draw debut at the 2024 Hong Kong Tennis Open, partnering with older sister Nadiia Kolb in doubles. They defeated Japanese duo Aoi Ito and Kyà Âka Okamura in the first round.In the quarter-finals, they were defeated by Norwegian Ulrikke Eikeri and Japanese Makoto Ninomiya.
In a 2024 interview with League of Legends journalist Rigas, Kolb stated that she wants to focus on streaming League of Legends when she retires from tennis.