Valentyn is a given name. Notable people with the name include:
Valentyn Demyanenko, Ukrainian sprint canoeist
Valentyn Grekov (born 1976), Ukrainian judoka
Valentyn Kravchuk (born 1944), Ukrainian rower
Valentyn Poltavets, (born 1968), Ukrainian football midfielder
Valentyn Rechmedin (1916–1986) Ukrainian journalist and writer
Valentyn Slyusar, Ukrainian football midfielder
Valentyn Symonenko (born 1940), Ukrainian statesman
