Sri Lanka Ports Authority Maritime Museum (වරාය අධිකාරය මූදුබඩ කෞතුකාගාරය ), commonly known as the Colombo Maritime Museum, is located at 19 Chaithya Road, Colombo, adjacent to the Colombo Port. The museum is operated and maintained by the Sri Lanka Ports Authority.
The museum is housed in a former Dutch prison, built in 1676, which is the only surviving Dutch period building within the Colombo Port area.