Sir Thomas Pelham, 1st Baronet (died 2 December 1624) was an English politician.
He was the youngest son of Sir Nicholas Pelham of Laughton, East Sussex and his wife Anne Sackville, who was through her mother a first cousin of Anne Boleyn.
He was educated at Lewes Grammar School (1557), Queens' College, Cambridge (1561) and studied law at the Inns of Court (1566).
He was elected a Member (MP) of the Parliament of England for Lewes in 1584 and Sussex in 1586.
[1] His son Thomas succeeded him in the baronetcy in 1624, while his daughter Judith married Henry Carey, 1st Earl of Dover.