Nadiia Leonidivna Kolb (Ukrainian: Надія Леонідівна Колб; born 19 January 1993) is a Ukrainian tennis player.

Her younger sister Maryna, who is also a professional tennis player, is her regular doubles partner.

Nadiia made her WTA Tour main-draw debut at the 2024 Hong Kong Tennis Open, partnering with younger sister Maryna Kolb in doubles.

They defeated Japanese duo Aoi Ito and Kyōka Okamura in the first round.

[2]In the quarter-finals, they were defeated by Norwegian Ulrikke Eikeri and Japanese Makoto Ninomiya.