Montreal River may refer to:

• Montreal River (Algoma–Sudbury, Ontario), a tributary of Lake Superior
• Montreal River (Timiskaming District), a tributary of the Ottawa River
• Montreal River (Saskatchewan)

• Montreal River (Michigan), a river in the Keweenaw Peninsula
• Montreal River (Wisconsin–Michigan), along the Wisconsin-Michigan border

• Montreal River, Ontario

• Montreal (disambiguation)
• St. Lawrence River, the main river on which the city of Montreal is situated
• Rivière des Prairies, the other river that adjoins Montreal