Pyotr Ilyich Klimuk (Belarusian: Пётр Ільіч Клімук; Russian: Пётр Ильич Климу́к; born 10 July 1942) is a former Soviet cosmonaut and the first Belarusian to perform space travel.

From 1991 to 2003, he headed the Yuri Gagarin Cosmonaut Training Center.

Klimuk attended the Leninski Komsomol Chernigov High Aviation School and entered the Soviet Air Force in 1964.

In 1991 he was promoted to Chief of that facility and remained in that post until retirement in 2003.

He is the author of two books on human spaceflight: Beside the Stars, and Attack on Weightlessness.