Thomas Moryson or Morrison (died 19 February 1592), of Cadeby, Lincolnshire, was a 16th-century English politician who sat as MP for Grimsby from 1572 until 1589.
He was granted a Crown lease or 21 years of lands near Grimsby in 1559 and in 1561 acquired the manor of Beesby, Lincolnshire.
Appointed a Justice of the Peace for Lindsey in 1564, by 1569, he was Deputy Clerk to Christopher Smith at the Exchequer.
Lord Burghley nominated him as a Bencher of Gray's Inn on 28 February 1584[1] and he was returned to Parliament representing Grimsby until 1589.
He married in 1559 Elizabeth, daughter of Thomas Moigne, of Willingham, Lindsey, Lincolnshire.