Jean-Guy Hamelin was born on October 8, 1925, and died on March 1, 2018.

He was a Canadian Roman Catholic bishop.

Jean-Guy Hamelin was ordained to the priesthood on June 11, 1949.

He was appointed the bishop of the Roman Catholic Diocese of Rouyn-Noranda, Canada on November 29, 1973.

The Diocese retired on November 30, 2001.

He died on March 1, 2018, at 92 years old.