John Morton (c. 1716 – 25 July 1780) was an English Tory politician.
He was the son of John Morton of Tackley, Oxfordshire and was educated at Abingdon School and Trinity College, Oxford. He entered the Inner Temple in 1732, was called to the bar in 1740 and made a bencher in 1758.
He was appointed Recorder of Woodstock in 1743, made King's Counsel in 1758, Chief Justice of Chester from 1762 to his death and deputy high steward of Oxford University from 1770 to his death.
In 1765, a Bill of Regency came before Parliament, to make provisions should George III die unexpectedly. The terms of the Bill and the choice of regents rapidly became the subject of debate between Whigs and Tories, particularly the question of whether the King's mother, the Dowager Princess of Wales, should be capable to serve as Regent. (Her connection with Lord Bute had made her the target of Whig attacks.) George Grenville, who opposed her appointment, represented to the King that a Regency Bill inclusive of her could not pass the House of Commons. The King reluctantly consented, not wishing to re-open the accusations against his mother, and the Bill passed the House of Lords excluding the Princess. However, the Chancellor, Lord Northington, discovering the circumstances, he gave Morton secret instructions. Morton, in what Lord Temple called "a dull speech", proposed to amend the Bill and add the Princess to it; he was seconded by Edward Kynaston and thirded by Samuel Martin, the Princess' treasurer, and the amendment unexpectedly passed. The Whigs were largely unwilling to divide and go on the record opposing the amendment, and the amended bill passed both Commons and Lords, notwithstanding Grenville's prediction. The King was outraged, and dismissed Grenville soon after.