Zelin is a surname. Notable people with the surname include:
Alexander Zelin (born 1953), Russian Air Force colonel-general Madeleine Zelin, American sinologist Steven Zelin, American singer-songwriter
There are also some places named Zelin: Zelin (), a town in Echeng District, Ezhou, Hubei, China Zelin Mrzlovodički, a village in Croatia Zelin Crnoluški, a village in Croatia