General Thomas Carleton (c. 1735 – 2 February 1817) was an Irish-born British Army officer who was promoted to colonel during the American Revolutionary War after relieving the siege of Quebec in 1776. After the war, he was appointed as Lieutenant-Governor of New Brunswick, and supervised the resettlement of Loyalists from the United States in the province. He held this position until his death, although he was absent in England for the last fourteen years of his tenure, refusing orders to return in a dispute about seniority.