Oleg Vladimirovich Galkin, also Oleh Halkin (1 May 1965 – 10 May 2003) was a Soviet and Ukrainian cyclist. His name was spelled Oleh Halkin as transliterated from Ukrainian when he competed for post-Soviet Ukraine.

In 1990 he was world champion (as part of the Soviet Union cycling team) in 100 km team racing and bronze medalist in 1989. He competed in the 100 km. team time trial at the 1992 Summer Olympics for the Unified Team, which took 4th place.