Georgios Kalaitzis (also spelled Giorgos; Greek: Γιώργος Καλαϊτζής; born August 29, 1976) is a Greek basketball coach and former professional player, who last served as the youth academy head coach for Panathinaikos of the Greek Basket League and the EuroLeague.

He ended his playing career with Doukas, of the Greek 3rd Division.

[1] With Greece's under-19 national team, Kalaitzis won the gold medal at the 1995 FIBA Under-19 World Cup.

In January 2020, he joined the senior men's first team of Panathinaikos, working as an assistant coach to Rick Pitino.

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