Dennis James Allen (2 March 1939 – 9 July 1995) was an English football player and manager. Born in Romford, Allen represented Charlton Athletic (1956–1961), Reading (1961–1970) and Bournemouth & Boscombe Athletic (1970–1971) as an inside-forward. He scored 89 goals in 358 league appearances. Dennis went on to be player-manager at Cheltenham Town. His brother Les (b. 1937), son Martin (b. 1965), grandson Charlie Allen (b. 1992), great-nephew Oliver (b. 1986) and nephews Bradley (b. 1971), Clive (b. 1961) and Paul Allen (b. 1962) all played football professionally. Martin went on to manage Cheltenham Town himself.