Saint Catherine Street, Main commercial street in Montreal, Canada

Saint Catherine Street runs through downtown Montreal as a major commercial artery, stretching from Westmount toward the eastern neighborhoods. Shops, restaurants, theaters, and entertainment venues line both sides, creating a diverse retail and cultural destination.

Sainte-Catherine grew in four stages: 1758–1788 from Saint-Alexandre to Sanguinet, 1820–1860 east to Panet and west to McGill College Avenue, 1860–1890 to De Lorimier and Greene Avenue, and 1890–1910 to Vimont Street. An 1892 viaduct over the railway pushed development east, and around 1950 short sections linked it to De Maisonneuve Boulevard and Notre-Dame Street.

The name's origin is uncertain: Jacques Viger, who oversaw street names from 1813, may have honoured his daughter-in-law Catherine Élizabeth, while another explanation points to Saint Catherine, whose feast day is 25 November. In the 18th century the street was also called Sainte-Geneviève or Saint-Gabriel. Near Saint-Laurent Boulevard, the intersection formed the centre of Montreal's Red Light district; since 2012 the 2.22 Sainte-Catherine Est building has housed the Vitrine culturelle, selling regular and last-minute show tickets.

Nine metro stations give access to the street, most of them set back on the parallel boulevard de Maisonneuve, rising toward Ontario, Hochelaga and Sherbrooke in the east. The downtown stretch is served by the green line, and many buildings connect to the Underground Pedestrian Network. West of Peel, the street is being rebuilt in phases through autumn 2025, so expect detours.

The street's name has no confirmed origin. The most accepted theory credits Jacques Viger, responsible for street names from 1813, who may have named it after his daughter-in-law Catherine Élizabeth. In the 18th century it was also called Sainte-Geneviève and Saint-Gabriel, as street names changed often then.