Saint-Maurice–Champlain (French pronunciation: [sɛ̃ mɔʁis ʃɑ̃plɛ̃]) is a federal electoral district in Quebec, Canada, that has been represented in the House of Commons of Canada since 2004.

It consists of: The neighbouring ridings are Abitibi—Baie-James—Nunavik—Eeyou, Roberval—Lac-Saint-Jean, Portneuf—Jacques-Cartier, Trois-Rivières, Berthier—Maskinongé, Joliette, Laurentides—Labelle, and Pontiac.

According to the 2021 Canadian census[2] Ethnic groups: 93.0% White, 5.5% Indigenous Languages: 93.9% French, 2.6% Atikamekw, 1.1% English Religions: 75.7% Christian (70.3% Catholic, 5.4% Other), 23.5% none Median income: $37,200 (2020) Average income: $43,040 (2020) Saint-Maurice—Champlain riding was created in 2003 from parts of Abitibi—Baie-James—Nunavik, Champlain, Roberval and Saint-Maurice ridings.

This riding gained territory from Trois-Rivières during the 2012 electoral redistribution.