William Hartley (born at Wyn, in Derbyshire, England, of a yeoman family about 1557; executed 5 October 1588) was an English Roman Catholic priest.
Being removed by the vice-chancellor, Tobias Matthew, in 1579 on suspicion of Catholic tendencies, he went to Reims in August, was ordained at Châlons on 24 February 1580, and returned to England in June of that year.
[1] Hartley helped Robert Parsons and Edmund Campion in printing and distributing their books in England.
He then spent some little time at Reims, recovering his health, and made a pilgrimage to Rome on 15 April 1586, before returning to the English mission.
[1] In September 1588, he was arrested in Holborn, London, and, as his friend Father Warford said, incurred the suspicion of having apostatized.