William Sherwin (c. 1645–c. 1709) was an English engraver, one of the first to work with mezzotints.
Life
He was the son of William Sherwin (1607–1687?), the nonconformist minister, and was born at Wallington, Hertfordshire, where his father was rector around 1645. On his print of his father, dated 1672, he styles himself engraver to the king by patent. He married Elizabeth Pride, great-niece and ward of George Monck, 1st Duke of Albemarle, whose heir-at-law she eventually became, and there exists a pedigree of the Moncks of Potheridge engraved by Sherwin expressly to show his wife's claim to that position.
Sherwin was one of the early practitioners of mezzotint, a technique he learned from Prince Rupert. He dedicated to the Prince a pair of large portraits of Charles II and his queen engraved using the method; the former of these is dated 1669, the earliest found on an English mezzotint. Among his other mezzotint plates are portraits of the Duke of Albemarle, Elizabeth Monck, Duchess of Albemarle, Adrian Beverland, and a number of royal personages. Sherwin seems to have worked mainly from his own drawings.