Sir Frederick Haldimand, born François Louis Frédéric Haldimand, was a Swiss military officer best known for his service in the British Army in North America during the Seven Years' War and the American Revolutionary War. General Gage called Haldimand to New York in 1773 to temporarily act as commander-in-chief of North America while he went to England on leave. While Haldimand's command was uneventful, the political climate in the provinces noticeably declined, and he carefully resisted bringing troops in conflict with the population by refusing to get involved in the jurisdictional disputes over the New Hampshire Grants and refusing to protect tea shipments after the Boston Tea Party unless specifically requested to do so. When Gage returned to Boston in 1774, Haldimand remained in command of the troops in New York, which Gage ordered to Boston in September 1774 in the wake of the colonial uprising known as the Powder Alarm.

While Gage was primarily occupied with his duties as Governor of Massachusetts, Haldimand commanded the army in Boston although Gage did not notify him of the expedition that led to the Battles of Lexington and Concord on April 19, 1775. He sailed from Boston in June 1775 (one day before the Battle of Bunker Hill), and arrived in London in August. Haldimand became Governor of the Province of Quebec (which at the time included what is now Ontario) in 1778, and served through the American Revolution. In the summer of 1784, Frederick Haldimand returned to England, on leave, but he was not to return to Quebec, as he was formally replaced by General Carleton in 1786. In 1785, he was awarded the Order of the Bath. He settled in London, but made regular visits to his hometown of Yverdon, where he died, on 5 June 1791, while on one of his visits.