Admiral Sir Peircy Brett (1709 – 14 October 1781) was a Royal Navy officer. As a junior officer he served on George Anson's voyage around the world and commanded the landing party which sacked and burned the town of Paita in November 1741. During the Jacobite rising Brett saw action on 9 July 1745, when as captain of the fourth-rate he exchanged fire with the French ships Elizabeth and the Du Teillay: the Du Teillay at the time was carrying Charles Edward Stuart to Scotland with supplies and funds to support his cause. Brett also commanded the third-rate at the First Battle of Cape Finisterre in May 1747 during the War of the Austrian Succession. He commanded on the North America and West Indies Station during the Seven Years' War and later became Senior Naval Lord. He was also a Member of Parliament, representing the constituency of Queenborough from 1754 until 1774.