Joseph-Thomas Duhamel (French pronunciation: [ʒozɛf tɔma dyamɛl]; 6 November 1841 – 5 June 1909) was a Canadian Roman Catholic priest and Archbishop of Ottawa.

Born in Contrecœur, Lower Canada, he was educated at St. Joseph's College, Ottawa, and ordained in 1863.

In 1887, he became metropolitan of the ecclesiastical province of Ottawa.

Two municipalities in Quebec, Duhamel and Duhamel-Ouest, are named after him.

This article about a Canadian Catholic bishop is a stub.