Sainte-Marie and St. Mary were federal electoral districts in Quebec, Canada, that were represented in the House of Commons of Canada from 1896 to 1979. This riding was created in 1892 as "St. Mary" riding from parts of Montreal East riding. It consisted of St. Mary's ward in the city of Montreal. In 1914, it was expanded to include papineau ward. After 1924, it was defined as being a part of the city of Montreal circumscribed by a number of streets.