Sir Peter Ball (died 1680) was an English lawyer and politician who sat in the House of Commons between 1626 and 1640. He was attorney general to Queen Henrietta Maria.
Ball was the son of Giles Ball of Mamhead, Devon. He was called to the bar at Middle Temple in 1623 and became recorder of Exeter. He was elected Member of Parliament for Tiverton in 1626 and was re-elected in 1628. He sat until 1629 when King Charles decided to rule without parliament for eleven years. In 1636, he became an associate to the bench.
In April 1640, Ball was re-elected MP for Tiverton in the Short Parliament. He then became attorney-general to Queen Henrietta Maria and was Lent reader in 1641. He was knighted at Oxford on 7 October 1643 and was awarded D.C.L. at Oxford University on 19 February 1644.
Ball died in 1680 and was buried at Mamhead on 4 September 1680.
Ball married Ann Cooke, daughter of Sir William Cooke, of Gloucestershire. They had seventeen children including William the astronomer and Peter the physician.