Suter returned to Wisconsin following his playing career, settling in the rural community of Minocqua where he and his wife Cathy raised their family. They have two sons, Jake and Jared, both of whom also play hockey. Jake was a defenseman for the UMass Lowell River Hawks. In addition to his sons, several of Suter's nephews are also defensemen. Among them is Bob's son Ryan, who also plays in the NHL and is an Olympian, and whom Gary considered unretiring to play with when the younger Suter was drafted by the Nashville Predators in 2003. Instead, he turned to coaching, working with the Madison Capitols program, as well as assisting with the Lakeland Union High School T-Birds in Minocqua. Gary is one of several members of the Suter family who operate a youth hockey camp in Madison that was held for the 17th year in 2012.