Several Canadian naval units have been named HMCS Calgary.
- HMCS Calgary (K231) (I), a Flower class corvette that served in the Royal Canadian Navy during the Battle of the Atlantic.
- HMCS Calgary (FFH 335) (II), a Halifax class frigate commissioned into the Canadian Forces in 1994.
Battle Honours
- Atlantic, 1942-45.
- Biscay, 1943.
- Normandy, 1944.
- English Channel, 1944-45.
- North Sea, 1945.