Notre-Dame Basilica is a basilica or cathedral in the historic district of Old Montreal, in Montreal, Quebec, Canada. The church is located at 110 Notre-Dame Street West, at the corner of Saint Sulpice Street. It is located next to the Saint-Sulpice Seminary and faces Place d’Armes square.

The Notre-Dame basilica of Montreal is the first church of the Gothic Revival style in Canada. Its history is intimately tied in to the history of the City of Montreal. It bears witness to its Catholic foundations and the ever-present connections between the arts and religion.

A place of prayer and celebration of Catholic worship, Notre-Dame basilica has been the site for grand events that have highlighted the imagination of the Québécois.

The interior of the church is amongst the most dramatic in the world and regarded as a masterpiece of Gothic Revival architecture. The vaults are coloured deep blue and decorated with golden stars, and the rest of the sanctuary is decorated in blues, azures, reds, purples, silver, and gold. It is filled with hundreds of intricate wooden carvings and several religious statues.