Saint-Placide (French pronunciation: [sɛ̃ plasid]) is a municipality in the Laurentides region of Quebec, Canada, part of the Deux-Montagnes Regional County Municipality, along the north shore of the Ottawa River.

In 1780, the first European settlers arrived here. In 1848, the Parish of Saint-Placide was formed when it was separated from the parish of Saint-Benoît. The new parish name was undoubtedly chosen because Saint Placide, a monk of the sixth century, was a disciple of Saint Benedict. In 1853, its post office opened, and in 1855, the Parish Municipality of Saint-Placide was formed.

A wharf, built in 1867, allowed vessels of the Ottawa River Navigation Company to take delivery of wheat at that time in the region.

In 1950, the Village Municipality of Saint-Placide was formed when it separated from the Parish Municipality, and was surrounded by the latter's territory. On August 3, 1994, these municipalities were rejoined again to form the new Municipality of Saint-Placide.

Population trend:

Private dwellings occupied by usual residents: 778 (total dwellings: 876)

Mother tongue:

Highway 344 passes through Saint-Placide. The Oka Express goes to the Deux-Montagnes station and Terminus Saint-Eustache