Molson Bank Building, Montreal, Bank building in Old Montreal, Canada

The Molson Bank Building is a bank structure located at 278-288 Rue St-Jacques featuring stone facades and ornamental elements in Second Empire style. The ground floor displays arched openings and large windows, while upper stories feature vertical divisions and carved stone details throughout the composition.

The building was constructed in 1866 as the headquarters for the Molson Bank, representing the family's financial power in the city. The Bank of Montreal acquired it in 1925, marking a transition in ownership and the evolution of banking operations downtown.

The building's name comes from the Molson Bank, founded by William Molson, whose family ran the brewery business; the bank opened branches from 1870, and the head office on St. James Street also held the main branch. After the 1925 merger the Bank of Montreal ran a branch and its international services here, and the first floor was extended to Notre-Dame Street inside the Insurance Exchange building of 1923–1924.

The building is located near Basilique Notre-Dame in the Ville-Marie district and currently houses government and legal offices with restricted public access. The carved stone details and facade are visible from the street, making it worthwhile to view from outside.

The first floor was extended to Notre-Dame Street inside the Insurance Exchange building, erected behind the bank in 1923–1924. The Bank of Montreal kept a branch and its international services here until closing the branch in 1981.