Saint-Lazare (French pronunciation: [sɛ̃ lazaʁ]) is an off-island suburb of Montreal, in southwestern Quebec, Canada in the Regional County Municipality of Vaudreuil-Soulanges.

Originally part of the Seigneurie de Vaudreuil in the 18th century, the territory corresponding to Saint-Lazare was considered difficult to farm owing to sandy soil, and remained mostly uninhabited.

Originally a rural farming town, the city of Saint-Lazare experienced rapid growth in the 1990s, fueled predominantly by the arrival of young, middle-class families.

It is a 4-season park, with an outdoor pool, trails for hiking, cross-country skiing, horse riding, and snowshoeing, and picnic areas.

A new privately-financed sports centre was opened to the public in 2006 which includes an indoor soccer turf, a hockey rink, and a gym.

Areas surrounding Saint-Lazare are dedicated to equestrian horse riding, including sanctioned trails that flow through wooded forests and nearby lakes in the region.

All-terrain vehicles are very popular in the region with an officially sanctioned trail, which runs between Saint-Lazare and the nearby town of Rigaud, Quebec.

The city is served by the 51 bus from the Exo La Presqu’Île, terminating at the Vaudreuil train station.