William Cartwright (born December 1611, Ashchurch, Tewkesbury, Eng.—died Nov. 29, 1643, Oxford, Oxfordshire) was a British writer greatly admired in his day as a poet, scholar, wit, and author of plays in the comic tradition of Ben Jonson.
Educated at Westminster School and the University of Oxford, Cartwright became a preacher, noted for his florid style, and a reader in metaphysics. On the outbreak of the English Civil Wars in 1642, he joined the university war council, and in 1643 he was university junior proctor. Charles I wore black on the day of Cartwright’s funeral. Cartwright’s plays were written before he took orders; The Ordinary (produced 1635?) mocked Puritans, and The Royal Slave (1636) was staged at court. His plays, fantastic in plot and stilted and artificial in treatment, have not withstood the test of time.