Marinescu is a Romanian surname deriving from the given name "Marin". Notable people with the surname include:
Alexandra Marinescu (born 1982), retired Romanian Olympic gymnastAndrei Daniel Marinescu (born 1985), Romanian football playerAngela Marinescu (born 1941), Romanian poetGheorghe Marinescu (1863–1938), Romanian neurologistLiviu Marinescu (born 1970), Romanian composer of orchestral and chamber musicLucian Marinescu (born 1972), Romanian football player.Marian-Jean Marinescu (born 1952), Romanian politicianMedeea Marinescu (born 1974), Romanian film actressMihai Marinescu (born 1989), Romanian racing driverTecla Marinescu (born 1960), Romanian sprint canoerIon Marin Sadoveanu (born Iancu-Leonte Marinescu), novelist and journalist