Kotsiubyntsi Castle (Ukrainian: Коцюбинський замок) is a lost defensive structure in the village of Kotsiubyntsi, Vasylkivtsi rural hromada, Chortkiv Raion, Ternopil Oblast, Ukraine, and a newly discovered archeological site.

[2] On 26 July 1671, the German traveler Ulrich von Werdum passed through Kotsiubyntsi, and mentioned the local castle in his diary.

In the early twentieth century, Mykola Bala found a gold chain in the recess, which he sold for 100 "market" rynskas.

In the nineteenth century, the Bala family lived on the territory of the bastion and used it for a vegetable garden and outbuildings.

[3] Today, the bastion's territory is divided between the two courtyards of the Patera's and Topolnytskyi's families.