Thomas Grantham (by 1525 – 15 October 1558) was an English politician.
He was elected a Member (MP) of the Parliament of England for Lincoln in 1547.
He was a justice of the peace (JP) for Lincolnshire (Kesteven and Lindsey) from 1554 to his death.
He married Mary, the daughter and coheiress of Sir John Dunham of Kirklington, Nottinghamshire, with whom he had 3 sons and 4 daughters.
This article about a 16th-century member of the parliament of England is a stub.