Sir Richard Lyons PC, MP (1310–1381) was a prosperous City of London merchant, financier, and property developer, who held a monopoly on the sale of sweet wine in London, during the 14th century. He was a Privy Counsellor, an Alderman of the City, and a member of the Worshipful Company of Vintners, and served as both as Sheriff of London and MP for Essex.
Lyons was a lifelong friend of the poet Geoffrey Chaucer.
Lyons was killed by Wat Tyler during the Peasants' Revolt.