HMCS Carleton is a Canadian Forces Naval Reserve Division (NRD) located in Ottawa, Ontario, Canada.

With the establishment of the Royal Canadian Navy Volunteer Reserve (RCNVR) in 1923, the Ottawa Half-Company was stood up in 1923.

Just prior to Canada's declaration of war on Germany, the Canadian government called the Naval Reserve into active service.

[1] On 17 December 1943, HMCS Carleton moved to its current facilities at Canadian Forces Reserve Barrack Dow's Lake, when the new "stone frigate" was inaugurated in the presence of Major General Alexander Cambridge, 1st Earl of Athlone and the then Governor General of Canada.

Description: Barry wavy of eight Argent and Azure the crest from the Arms of Sir Guy Carleton, Baron Dorchester which is "A dexter arm embowed and naked at the elbow the shirt sleeve folded above the elbow Argent and vested Gules; the hand grasping an arrow in bend sinister point downwards proper.

"[4] Significance: Although the division was named after the British schooner HMS Carleton (Battle of Valcour Island, 11 October 1776), there is no doubt that the original ship was named in honour of Sir Guy Carleton who is accredited with having saved Canada for the British in the defeat of Montgomery and Arnold at Quebec, New Year's Eve 1775–1776.