Ioannis Georgallis (alternate spellings: Giannis, Georgalis) (born May 17, 1983) is a Greek former professional basketball player, who finished his club playing career as the team captain of Kolossos Rodou of the Greek Basket League and a current basketball coach.

At a height of 2.00 m (6 ft 6 3⁄4 in) tall, and a weight 104 kg (230 lbs), he mainly played at the small forward position.

Georgallis began his professional career in 2000, with the Greek club Apollon Patras.

In October 2010, he signed a three-year contract with the Greek club Kolossos Rodou.

He also won the silver medal at the 2005 Mediterranean Games, while playing with Greece's under-26 national selection.