SS Princess Mary was a passenger vessel in the coastal service fleet of the Canadian Pacific Railway (CPR) during the first half of the 20th century.

[3] Princess Mary was built by Bow, McLachlan and Company of Paisley, Scotland for the Canadian Pacific Railway.

[7] While under tow by the Canadian tug Chelan from Skagway, Territory of Alaska, to Vancouver with a cargo of silver, lead, and zinc ore concentrates, she was lost when Chelan sank on April 15, 1954, with the loss of all 14 people aboard off the entrance to Sumner Strait approximately 4 nautical miles (7.4 km; 4.6 mi) west of Cape Decision in Southeast Alaska.

[5][7] When she was converted into a barge, part of Princess Mary′s superstructure was beached on Harbour Road in West Victoria, British Columbia, across the street from the Point Hope Shipyard.

[citation needed] The superstructure became the Princess Mary Restaurant, which later moved to a different location in West Victoria.