John Merrill (died 1734), of Lainston, Hampshire, was a British government official and politician who sat in the House of Commons between 1721 and 1734.
Merrill was probably the clerk in the pay office who became deputy to John Grubham Howe, the Paymaster General, by 1710.
Pulteney said of Merrill ‘He understood the ... revenues ... as well, perhaps better than any man in it … he was the truest friend’.
He was deputy to Pulteney who was Cofferer of the Household from 1723 to 1725 and became a director of the South Sea Company in 1724.
He did not re-enter Parliament until a by-election on 23 January 1733, when he was returned as MP for St Albans by the Duchess of Marlborough on Pulteney's recommendation.