|Full name||Leighton Gary Allen|
|Date of birth||22 November 1973|
|Place of birth||Brighton, England|
|Height||6 ft 0 in (1.83 m)|
|Peacehaven & Telscombe|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Leighton Gary Allen (born 22 November 1973) is an English former footballer who played as a forward in the Football League for Colchester United. He was also on the books at Premier League club Wimbledon, but failed to make a first-team appearance.
Born in Brighton, Allen was on the books at Premier League club Wimbledon for two years prior to his release in the summer of 1994. Unable to break into the first team, he joined Gillingham for a short stint until he was signed by Colchester United manager George Burley. Allen made just two Football League substitute appearances for the club, the first as a replacement for Paul Abrahams in a 1–0 win against Hartlepool United at Layer Road on 10 September 1994, and in the second he came on for Chris Fry in a 3–2 away victory at Darlington on 24 September. Shortly after this, Allen was released from Colchester as Burley built up his squad.
- "Colchester United – Player profile". Coludata.co.uk. Retrieved 18 July 2013.
- Whitehead, Jeff; Drury, Kevin (2008). The Who's Who of Colchester United: The Layer Road Years. Derby: Breedon Books. pp. 11, 12. ISBN 978-1-85983-629-3.
- "Leighton Allen – Football Stats – Soccer Base". Soccerbase. Retrieved 18 July 2013.
- "COLCHESTER UNITED:1950/51–1989/90 & 1992/93–2011/12". Post War English & Scottish Football League A – Z Player's Database. Retrieved 18 July 2013.
- "Colchester United – Match details – Colchester Utd 1–0 Hartlepool United". Coludata.co.uk. Retrieved 18 July 2013.
- "Colchester United – Match details – Darlington 2–3 Colchester Utd". Coludata.co.uk. Retrieved 18 July 2013.