Kosmyryn (Ukrainian: Космирин) is a village in Chortkiv Raion (district) of Ternopil Oblast (province) in western Ukraine.

from 1772 until 1918 to Austrian empires, in 1918-1919 to West Ukrainian People's Republic.

The first known owner of village was Polish nobleman Stanislav of Khodorostav (now Khodoriv, Lviv Oblast), who was connected by marriage was due to the representatives of the House of Buczacki.

[2] Reading room of Ukrainian society Prosvita operated in the village.

Until 18 July 2020, Kosmyryn belonged to Buchach Raion.