Thomas Joseph Shahan was an American Catholic theologian and educator, born at Manchester, New Hampshire, educated at Collège de Montréal (1872), at the Pontifical North American College, and at the Propaganda Fide in Rome.

The Collège de Montréal is a subsidized private high school for students attending grades 7–11 located in downtown Montreal, Quebec, Canada. A former Roman Catholic minor seminary, it was founded on June 1, 1767 as the Petit Séminaire of Montreal by the Sulpician Fathers. From 1773 to 1803, it was known as Collège Saint-Raphaël.