Richard Lowndes (?1707–75), of Winslow, Buckinghamshire, was an English politician. He was the son of Robert Lowndes of Winslow, Buckinghamshire and educated at Eton School and Worcester College, Oxford. He succeeded his father in 1727, inheriting considerable estates, including Winslow Hall. He later passed Winslow Hall to his son on the latter's marriage in 1766. He was appointed High Sheriff of Buckinghamshire for 1738–39 and was elected MP for Buckinghamshire (1741–1774).