The Istanbul giants’ victory, with two games left to play, moves them 10 points clear of second-placed Fenerbahce, who lost 2-0 at Istanbul BB on Sunday.
Fatih Terim, in his first spell in charge of Galatasaray, felt his side were deserved champions.
“We are deserved champions with the way we played and fought,” Terim said.
“I thank the fans as well. I greet all the Galatasaray fans around the world.”
The triumph clinches back-to-back titles for Cimbom, who reached the UEFA Champions League quarterfinals this term.