HMCS Trois Rivières (pennant J269), alternatively spelled Trois-Rivieres and Trois-Rivières, was a Bangor-class minesweeper that served with the Royal Canadian Navy during the Second World War.

Trois Rivières was of the diesel-powered version, being equipped with a 9-cylinder diesel engine driving two shafts that produced 2,000 brake horsepower (1,500 kW).

[5] The Canadian diesel-powered Bangors were armed with a single quick-firing (QF) 12-pounder 12 cwt gun mounted forward.

[7] The minesweeper was assigned to the Western Local Escort Force after arriving at Halifax, Nova Scotia in August 1942.

[7] Trois Rivières was paid off on 31 July 1945 and turned over to the Royal Canadian Mounted Police (RCMP) on 3 August 1945.

[7][8] Renamed MacBrien by the RCMP, the ship served on the East Coast of Canada until transferred on permanent loan for conversion to a naval research vessel.