Henry Pelham (c.1661 – 1 April 1721) was an English Member of Parliament. A younger son of Sir John Pelham, 3rd Baronet, he was returned for two Parliamentary constituencies in Sussex, where the family held considerable influence, for most of the time between 1690 and 1702. Appointed to the sinecure office of Clerk of the Pells in 1698, Pelham was a reliable Whig and Court-supporting placeman.