Lac-Saguay is a village municipality in Antoine-Labelle Regional County Municipality in the Laurentides region of Quebec, Canada.

Its economy is centred on tourism, outdoor recreation, hunting, and fishing.

The municipality is named after the adjacent Lake Saguay, which in turn comes from the Algonquin sagwa, meaning "unblock" or "pour". An alternate explanation is that it comes from saki, meaning "river mouth."

In 1905, the first settlers arrived when Gouin Road opened that connected Nominingue to Ferme-Neuve via Lac-Saguay.

In 1911, the Township Municipality of Boyer-Partie-Ouest was formed out of previously unorganized area, named after Arthur Boyer. That same year, the Parish of Saint-Hugues-du-Lac-Saguay was founded.

In 1921, the post office opened under the name Lac-Saguay.

On July 1, 1951, Boyer-Partie-Ouest was dissolved and, together with more unorganized territory, reformed into the Township Municipality of Boyer. In 1963, it changed names and status to the Municipality of Saguay, and again in 1985 to the Village Municipality of Lac-Saguay.

In the 2021 Census of Population conducted by Statistics Canada, Lac-Saguay had a population of 526 living in 280 of its 447 total private dwellings, a change of 14.6% from its 2016 population of 459. With a land area of 171.88 km (66.36 sq mi), it had a population density of 3.1/km (7.9/sq mi) in 2021.

Historical census populations – Lac-Saguay

Year Pop. ±% 1956 253 —     1961 249 −1.6% 1966 214 −14.1% 1971 276 +29.0% 1976 264 −4.3% 1981 293 +11.0% 1986 301 +2.7%	Year Pop. ±% 1991 305 +1.3% 1996 318 +4.3% 2001 382 +20.1% 2006 492 +28.8% 2011 446 −9.3% 2016 459 +2.9% 2021 526 +14.6%
Source: Statistics Canada

Mother tongue (2021):

• English as first language: 3.8%
• French as first language: 94.3%
• English and French as first language: 0%
• Other as first language: 1.9%

Lac-Saguay forms part of the federal electoral district of Laurentides—Labelle and has been represented by Marie-Hélène Gaudreau of the Bloc Québécois since 2019. Provincially, Lac-Saguay is part of the Labelle electoral district and is represented by Chantale Jeannotte of the Coalition Avenir Québec since 2018.

Lac-Saguay federal election results

Year		Liberal		Conservative		Bloc Québécois		New Democratic		Green
	2021	27%	100	10%	36	57%	212	2%	6	3%	10
	2019	32%	110	8%	27	52%	181	5%	18	2%	5
	2015	36%	91	9%	23	27%	68	26%	66	2%	5
	2011	13%	32	6%	15	38%	93	42%	103	2%	5
	2008	30%	72	9%	21	55%	131	5%	11	2%	5
	2006	12%	26	22%	47	60%	127	4%	8	2%	5
	2004	27%	51	5%	9	64%	121	2%	4	2%	4

Lac-Saguay provincial election results

Year		CAQ		Liberal		QC solidaire		Parti Québécois
	2022	43%	74	6%	11	14%	24	18%	32
	2018	41%	124	8%	23	15%	46	33%	102
	2014	22%	175	22%	172	7%	22	48%	159
	2012	25%	69	15%	40	6%	15	51%	139

List of former mayors:

This list is incomplete; you can help by adding missing items. (July 2022)

• Francine Asselin-Bélisle (...–2021)
• Michel Chouinard (2021–present)

• List of village municipalities in Quebec

• Official website