Olesha () is a village in Chortkiv Raion, Ternopil Oblast, western Ukraine. During the 2020 administrative-territorial reform, it was included in the Monastyryska urban hromada.
According to the 2001 Ukraine Census, it had population of 363.
It has the Ukrainian Greek Catholic .
In Congress Poland in the 1890s, it was part of (Buchach powiat)
During 1962âÂÂ1966 it belonged to Buchach Raion.