Olesha (Ukrainian: Оле́ша) is a village in Chortkiv Raion, Ternopil Oblast, western Ukraine.
During the 2020 administrative-territorial reform in was included into the Monastyryska urban hromada.
[1] According to the 2001 Ukraine Census, it had population of 363.
[2] It has the Ukrainian Greek Catholic St. Michael's Church [uk].
In Congress Poland in 1890s it was part of Powiat Buczacki [pl] (Buchach powiat)[3] During 1962–1966 it belonged to Buchach Raion.