HMCS Kamsack was a Flower-class corvette that served with the Royal Canadian Navy during the Second World War.

[3][4][5] The "corvette" designation was created by the French as a class of small warships; the Royal Navy borrowed the term for a period but discontinued its use in 1877.

[6] During the hurried preparations for war in the late 1930s, Winston Churchill reactivated the corvette class, needing a name for smaller ships used in an escort capacity, in this case based on a whaling ship design.

The first refit took place at Liverpool, Nova Scotia beginning on 12 November 1942 and was completed at Halifax 18 January 1943.

In June 1942, she transferred to the Western Local Escort Force (WLEF), with whom Kamsack would spend the rest of the war with.