Thomas Mozley (1806 – June 17, 1893), was an English clergyman and writer associated with the Oxford Movement.
Mozley was born at Gainsborough, Lincolnshire, the son of a bookseller and publisher. His brother, James Bowling Mozley, would become known for his own theological works. From Queen Elizabeth Grammar School, Gainsborough and Charterhouse School he progressed to Oriel College, Oxford in 1825, where he became the pupil, and subsequently the intimate friend, of John Henry Newman. In 1831 he was ordained, after which he became curate of Colchester, leaving a year later to take over the rectorship of Moreton Pinkney. He asked to leave four years later and in 1836 became rector of Cholderton, Wiltshire. In September of that year, he married Newman's younger sister Harriet, creating a family connection to his mentor.
From the beginning, Mozley was a strong supporter of the Tractarian movement. After contributing for some time to the British Critic, its periodical, Mozley succeeded Newman as editor in July 1841.
In 1843 he was on the point of joining the Roman Catholic Church. Newman, however, strongly advised him to take two years to reflect, and Mozley decided to remain an Anglican. In 1844 he began to write leading articles for The Times, and continued to do so regularly for many years. Ironically, Newman's own conversion to Catholicism in 1845 broke the connection between Mozley and Newman, who stopped their correspondence.
In 1847 Mozley resigned his country living and settled in London.