Lachute (French pronunciation: [laʃyt]) is a town in southwest Quebec, Canada, 82.2 km (51.1 mi) northwest of Montreal, on the Rivière du Nord, a tributary of the Ottawa River, and west of the Mirabel International Airport.

In 1796, Jedediah Lane, from Jericho, Vermont, bought several thousand acres of land on both sides of the North River, where Lachute is today.

That same year, Hezekiah Clark and his family, also of Jericho, settled near the falls on the North River, followed by Loyalists fleeing the American Revolution.

One year later, Sir John Johnson bought a large part of the Argenteuil Seigneury.

Johnson built a sawmill and gave land for the construction of churches, helping to attract new settlers to Argenteuil.

[4] From 1870 to 1880, Lachute went through another period of expansion, both in economic and social development; the railway linking Montreal and Ottawa was built through the centre of the small town.

In 1971, during the construction of Montréal-Mirabel International Airport, a part of the Saint-Jérusalem Parish was added to Lachute.