Peter Baillie (1771 – 1 September 1811) was a British West Indies merchant, and Whig politician who sat in the House of Commons from 1807 to 1811. Baillie was the eldest son of Evan Baillie of Dochfour and his wife Mary Gurley, daughter of Peter Gurley of St. Vincent. His father was a landowner in Scotland with commercial interests in Bristol including the firm of Evan Baillie, Sons & Co. He was sent to France to compete education in July 1788. He joined his father in Bristol in the West India mercantile house and ran the business during his father's absence. He was an ensign in the Royal Bristol Volunteers in 1797 and captain in 1803. In 1806 became a partner in Bristol Old Bank.