William Freke (1662–1744) was an English mystical writer, of Wadham College, Oxford and barrister of the Temple. Freke first comes to attention as a Socinian Unitarian who suffered at the hands of Parliament in 1694 for his anti-Trinitarian beliefs, and later recanted. William Freke sent his Brief but Clear Confutation of the Doctrine of the Trinity to both Houses of Parliament, was fined and the book burnt. The same happened the next year to John Smith (1695), a clockmaker who had written a similar pamphlet.