Thomas Proctor or Thomas Procter (1739 – 16 March 1806) commanded the 4th Continental Artillery Regiment during the American Revolutionary War. He was born in County Longford, Ireland, emigrated to British America, and joined the carpenter's guild in Philadelphia, Pennsylvania in 1772. He married Mary Fox in January 1767 in Philadelphia, PA. He received a commission as an artillery captain in October 1775 and proceeded to raise a company of Pennsylvania state artillery.