Petcu is a Romanian surname. It is a Bulgarian given name, therefore a conclusion can be drawn as to the ethnic origin of Romanians having that given name as a surname. It may refer to: Ioan Petcu (born 1959), Romanian footballer Ioana Petcu-Colan (born 1978), Irish violinist of Romanian origin living in Barcelona, Spain Răzvan Petcu (born 1973), retired Romanian freestyle and butterfly swimmer Sorin Petcu (born 1974), Romanian sprint canoeist Ştefan Petcu (born 1957), Romanian footballer