Thomas Marsham (by 1522 – 15 September 1557), of Norwich, Norfolk was an English politician.
He was the son of John Marsham (d. 13 May 1525) of Norwich by Elizabeth (d.1559[1]), daughter of Hamond Claxton of Chediston, Suffolk.
[1] Through his sister Mary Marsham he was the great-uncle of Temperance Flowerdew and John Pory.
He left Elizabeth his wife, and Ralph his brother, each a moiety of the manor of Little Melton.
He was a grocer and a Member of Parliament (MP) for Norwich in March 1553, as well as mayor of the city in 1554–55.