Lac-Etchemin (French pronunciation: [lak ɛtʃəmɛ̃]) is a municipality in and the seat of the Municipalité régionale de comté des Etchemins in Quebec, Canada.

"Etchemin" means "men, human beings" in Abenaki language.

Lac-Etchemin is home to winter resort Mont Orignal and the birthplace of controversial religious Community of the Lady of All Nations.

The area near Etchemin Lake was first described in 1828 as lovely by the surveyor Emmanuel.

A few years later, in 1835, the region sees its first settler, Commissary General Sir Randolph Isham Routh KCB (1782–1858), who was given a land grant of 9,000 acres (36 km2) for his services to the Crown.