Sir Richard Ratcliffe, KG (died 1485) was a close confidant of Richard III of England. He came from a gentry family in the Lake District, and became a companion of Richard when the latter was still Duke of Gloucester (1461–83). He was one of Richard's trustees in the lordship of Richmond, and was named steward of Barnard Castle. Richard, while Duke of Gloucester, knighted Ratcliffe during the Scottish campaigns, at the same time creating him a knight banneret. He died at the Battle of Bosworth Field.