William Chillingworth was a controversial English churchman. He was born in Oxford, where his father served as mayor; William Laud was his godfather. In June 1618 he became a scholar of Trinity College, Oxford, of which he was made a fellow in June 1628. He gained a reputation as a skilful debater, excelled in mathematics, and also became known as a poet. He associated with Sir Lucius Cary, John Hales, and Gilbert Sheldon.