 John St John, 12th Baron St John of Bletso

John St John of Northwood, 12th Baron St John of Bletso (15 November 1725 – 20 April 1767) was a British peer.St John was the eldest son of John St John, 11th Baron St John of Bletso and his wife Elizabeth Crowley, daughter of Sir Ambrose Crowley of Greenwich.