Jerry Dupont played for the Toronto Marlboros of the Ontario Hockey League at the age of 16. He was drafted in the first round, 15th overall by the Chicago Blackhawks in the 1980 NHL Entry Draft. He retired in 1987 after seven years of NHL with the Blackhawks and the Toronto Maple Leafs and AHL hockey with the Springfield Indians and Newmarket Saints.
In the NHL he played in 214 games and scored 7 goals and 29 assists.
He started his junior coaching career with the 1998 Thornhill Rattlers of the Ontario Provincial Junior A Hockey League. Within two years the team won the Dudley Hewitt Cup as Central Canadian Junior "A" Champions. In 2006–07, as the coach of the Aurora Tigers, he lead the team to the Dudley Hewitt Cup, and then later won the 2007 Royal Bank Cup as National Junior "A" Champions.