| Georgios Kalaitzis Γιώργος Καλαϊτζής | |
| Height Ft: | 6 |
| Height In: | 5 |
| Weight Lbs: | 220 |
| Nationality: | Greek |
| Birth Date: | 29 August 1976 |
| Birth Place: | Thessaloniki, Greece |
| Draft Year: | 1998 |
| Career Start: | 1994 |
| Career End: | 2014 |
| Career Position: | Guard / small forward |
| Coach Start: | 2015 |
| Years1: | 1994–1997 |
| Team1: | Panionios |
| Years2: | 1997 |
| Team2: | Olimpia Milano |
| Years3: | 1997–2006 |
| Team3: | Panathinaikos |
| Years4: | 2006–2008 |
| Team4: | Aris |
| Years5: | 2008–2011 |
| Team5: | Panellinios |
| Years6: | 2011–2013 |
| Team6: | Kolossos Rodou |
| Years7: | 2013–2014 |
| Team7: | Doukas |
| Cyears1: | 2015–2023 |
| Cteam1: | Panathinaikos (Youth academy) |
| Cyears2: | 2020–2022 |
| Cteam2: | Panathinaikos (assistant) |
| Highlights: | As player: |
Georgios Kalaitzis (also spelled Giorgos; el|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. During his playing career, at a height of 1.96 m (6'5") tall, Kalaitzis played at the point guard, shooting guard and small forward positions.
In his pro club career, Kalaitzis played with: the Greek Basket League club Panionios, the Italian LBA club Olimpia Milano, and the Greek Basket League clubs Panathinaikos, Aris, Panellinios, and Kolossos. 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. As a member of the senior men's Greek national team, he played at the 1997 EuroBasket, the 1998 FIBA World Championship, the 1999 EuroBasket, and the 2001 EuroBasket.
Kalaitzis became the head coach in the youth academy of Panathinaikos in 2015. In January 2020, he joined the senior men's first team of Panathinaikos, working as an assistant coach to Rick Pitino.