Giannopoulos, Yannopoulos, Yiannopoulos, Gianopoulos or Gianopulos, variously transliterated from the Greek: Γιαννόπουλος, is a Greek family name, which means "son of John". The female version of the name is Giannopoulou/Yiannopoulou (Γιαννοπούλου). Notable people with this name include: