Henry Albert Allen (1898–1976) was an English professional association football player of the 1920s. Born in Hackney, he joined Gillingham from Southend United in 1923 and went on to make six appearances for the club in The Football League. He left to join Charlton Athletic in 1924.
- ^ Henry Allen profile at the English National Football Archive (subscription required)
- ^ Triggs, Roger (2001). The Men Who Made Gillingham Football Club. Tempus Publishing Ltd. p. 10. ISBN 0-7524-2243-X.
- ^ Brown, Tony (2003). The Definitive Gillingham F.C.: A Complete Record. Soccerdata. p. 118. ISBN 1-899468-20-X.