Olga Badelka (Belarusian: Вольга Бадэлька, Russian: Ольга Баделько; born 8 July 2002) is a Belarusian chess player, currently playing for Austria, who holds the FIDE title of International Master (IM, 2019).

Olga Badelka is multiple winner of Belarusian Youth Chess Championships for girls in different age groups:

In 2013, Badelka won World School Chess Championship in the U11 girls age group.

[14] Badelka played for Belarus in the Women's Chess Olympiads: In 2017, she received the FIDE Woman International Master (WIM) title.

[18] In 2021, Badelka played the Bongcloud (doubled but not drawn) against Magnus Carlsen during a blitz event.