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