John Darcy, Lord Conyers (1659 – 6 January 1689) was an English soldier and one of the two members of the House of Commons of England representing Richmond, Yorkshire, briefly in 1681 and again from 1685 to 1687.
Due to the Exclusion Bill, King Charles II then ruled without parliament until his death in February 1685.
In 1688, Conyers brought about a reconciliation between Lord Danby and the Earl of Devonshire, laying the foundations of that year's rising against the king in the north of England.
Unsuspected as a rebel, he was ordered to arrest his fellow-conspirator Lord Lumley, one of the men who had signed the invitation to William of Orange to invade England and instigate the Glorious Revolution.
At a subsequent by-election, in February, he was succeeded by his brother Philip Darcy, who had just lost his seat at Newark.