SS Caribou was a Newfoundland Railway passenger ferry that ran between Port aux Basques, in the Dominion of Newfoundland, and North Sydney, Nova Scotia between 1928 and 1942. During the Battle of the St. Lawrence the ferry was attacked and sunk by the Nazi German submarine U-69 in October 1942, while traversing the Cabot Strait as part of her three weekly SPAB convoys. As a civilian vessel, she had women and children on board, and many of them were among the 137 who died.