Richard Plumer (c.1689–25 November 1750) was a British politician who sat in the House of Commons from 1722 to 1750. Plumer was the third surviving son of John Plumer, a wealthy London merchant of Blakesware, Hertfordshire, and his wife Mary Hale, daughter of William Hale of King's Walden, Hertfordshire. He had brothers Walter and William Plumer who were also in Parliament. He succeeded to his father's estates in Kent and Surrey in 1719. Plumer was operated on for a stone on 18 November 1750 and died a week later on 25 November unmarried.