Oleg Gennadyevich Sentsov (Ukrainian: Олег Геннадійович Сенцов, romanized:Oleh Hennadiiovych Sentsov; Russian: Олег Генадиевич Сенцов, romanized:Oleg Gennadyevich Sentsov; born 13 July 1976) is a Ukrainian filmmaker, writer and activist.
After the Russian annexation of Crimea, he was arrested in Crimea in May 2014 and sentenced to 20 years' imprisonment by a Russian court in August 2015 on charges of plotting terrorism acts. This was controversial and many believed his arrest was politically motivated.
On 7 September 2019 he was released in a prisoner swap.