Richard Matthewson Keith (15 May 1933 – 28 February 1967) was a professional footballer from Northern Ireland who played as a right-back.
He made over 200 appearances for English club Newcastle United between 1956 and 1964, and also played for Linfield, Bournemouth & Boscombe Athletic and Weymouth, and was a member of the Northern Ireland squad at the 1958 World Cup.
He was transferred to Newcastle United in September 1956, where he went on to make 208 Football League appearances and became captain in 1962.
Keith made 23 appearances for Northern Ireland between 1957 and 1962, and was part of the squad that reached the quarter-finals of the 1958 World Cup.
Keith died in Bournemouth on 28 February 1967 as a result of an accident at a builder's yard, when an automatic garage door he was dismantling collapsed on top of him.