Staša Gejo (Serbian Cyrillic: Сташа Гејо; born 25 November 1997) is a Serbian rock climber who specializes in competition climbing.

She was the 2015 World Junior Champion in both competition bouldering and the combined event.

In the senior category, she won the 2017 World Games in bouldering.

She was the 2017 European champion in bouldering and came in third in combined scoring.

In 2018 and 2021, she came in third at the World Championships in bouldering.