Saint-Louis (French pronunciation: [sɛ̃ lwi] ) was a provincial electoral district in the Montreal region of Quebec, Canada.

It corresponded to the western half of Ville-Marie (downtown Montreal).

It was created for the 1966 election from parts of Montréal–Saint-Louis, Montréal-Outremont and Montréal-Mercier electoral districts. Its final election was in 1989. It disappeared in the 1994 election and its successor electoral district was Westmount–Saint-Louis.

Legislature	Years	Member		Party
Riding created from Montréal–Saint-Louis, Montréal-Outremont and Montréal-Mercier
28th	1966–1970		Harry Blank	Liberal
29th	1970–1973
30th	1973–1976
31st	1976–1981
32nd	1981–1985
33rd	1985–1989		Jacques Chagnon
34th	1989–1994
Dissolved into Westmount–Saint-Louis

• Election results (National Assembly)
• Election results (QuebecPolitique.com)

45°29′38″N 73°34′41″W / 45.494°N 73.578°W / 45.494; -73.578