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:
People
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- Jim Gianopulos (born 1951), Greek American businessman, CEO of Fox Entertainment Group
- Mimi Gianopulos (born 1989), Greek American film actress, daughter of Jim Gianopulos
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