Saint-Martin
Parish municipality
Motto(s):  L'entraide dans la charité (French for "Mutual Aid in Charity")
Location within Beauce-Sartigan RCM.
Saint-Martin Location in southern Quebec.
Coordinates: 45°58′N 70°39′W / 45.967°N 70.650°W / 45.967; -70.650[1]
Country	Canada
Province	Quebec
Region	Chaudière-Appalaches
RCM	Beauce-Sartigan
Constituted	October 12, 1911
Government [2]
• Mayor	Jean-Marc Paquet
• Federal riding	Beauce
• Prov. riding	Beauce-Sud
Area [2][3]
• Total	119.90 km2 (46.29 sq mi)
• Land	118 km2 (46 sq mi)
Population  (2021)[3]
• Total	2,588
• Density	21.9/km2 (57/sq mi)
• Pop 2016-2021	4.5%
• Dwellings	1,226
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Postal code(s)	G0M 1B0
Area code(s)	418 and 581
Highways	R-204 R-269
Website	www.st-martin.qc.ca

Saint-Martin (French pronunciation: [sɛ̃ maʁtɛ̃] ^ⓘ) is a parish municipality in the Beauce-Sartigan Regional County Municipality in the Chaudière-Appalaches region of Quebec, Canada. Its population is 2,588 as of the Canada 2021 Census. It is named after Martin of Tours.

In the 2021 Census of Population conducted by Statistics Canada, Saint-Martin had a population of 2,588 living in 1,136 of its 1,226 total private dwellings, a change of 4.5% from its 2016 population of 2,477. With a land area of 118 km² (46 sq mi), it had a population density of 21.9/km² (56.8/sq mi) in 2021.^[4]

Population trend:^[5]

Census	Population	Change (%)
2021	2,588	4.5%
2016	2,477	0.6%
2011	2,462	3.2%
2006	2,543	2.1%
2001	2,598	2.0%
1996	2,546	4.2%
1991	2,443	0.1%
1986	2,445	1.9%
1981	2,493	4.9%
1976	2,377	0.1%
1971	2,375	7.4%
1966	2,564	5.2%
1961	2,437	2.3%
1956	2,494	3.3%
1951	2,579	4.2%
1941	2,691	17.7%
1931	2,287	26.1%
1921	1,813	27.1%
1911	1,426	48.7%
1901	959	7.3%
1891	894	N/A

Mother tongue language (2021)^[6]