Gallichan is a municipality in northwestern Quebec, Canada, in the Abitibi-Ouest Regional County Municipality located along the banks of the Duparquet River. It had a population of 488 in the 2021 Canadian census.

The municipality was constituted on January 1, 1958, and was called Saint-Laurent until 1986.

Historical census populations – Gallichan

Year Pop. ±% 1961 672 —     1966 614 −8.6% 1971 482 −21.5% 1976 440 −8.7% 1981 454 +3.2%	Year Pop. ±% 1986 487 +7.3% 1991 482 −1.0% 1996 478 −0.8% 2001 476 −0.4% 2006 458 −3.8%	Year Pop. ±% 2011 484 +5.7% 2016 468 −3.3% 2021 488 +4.3%
Source: Statistics Canada

Private dwellings occupied by usual residents (2021): 229 (total dwellings: 304)

Mother tongue language (2021)

Language	Population	Pct (%)
French only	480	99.0%
English only	5	1.0%
Both English and French	0	0.0%
Other languages	0	0.0%

Municipal council (2024):

• Mayor: Serge Marquis
• Councillors: Richard Vallières, Daniel Bélanger, Nathalie Shink, Jacklin Chabot, Fernand Nadeau, Raphaël Boutin-Bellavance

• Media related to Gallichan, Quebec at Wikimedia Commons
• Official website