Ftorek, 61, will work under coach Troy Ward with the Flames affiliate.
"In light of our commitment to rebuilding and providing our young players with a chance to play, there is even greater importance being placed on development and getting our prospects ready to contribute as quickly as possible in Calgary,” Flames general manager Jay Feaster said in a statement. "In support of that mission, we are thrilled to be able to add such an experienced coach and teacher as Robbie Ftorek to our organization."
He coached the Albany River Rats to the Calder Cup in 1995.
Ftorek played 707 games in the WHA and NHL from 1972-85. He was enshrined in the United States Hockey Hall of Fame in 1991.
The Flames also announced Todd Woodcroft was named scouting director.