Mercier (French pronunciation: [mɛʁsje] ⓘ; also known as Montreal—Mercier) was a federal electoral district in Quebec, Canada, that was represented in the House of Commons of Canada from 1935 to 2004.

In 2003, the district was abolished and split into the La Pointe-de-l'Île and Honoré-Mercier ridings.

A provincial electoral district still exists under the same name but is located in Plateau Mont-Royal borough.

The new Mercier riding consisted of: The district was abolished in 2003 when it was split into La Pointe-de-l'Île and Honoré-Mercier ridings.

This riding elected the following members of Parliament: On Jean's acceptance of an office of emolumentunder the Crown, 24 August 1949 Riding history from the Library of Parliament: