Jack Montgomery (born 17 February 1992) is a British actor and singer, who has appeared in television, stage productions and films.
He appeared as young Simon in Tristan & Isolde (2006) and The Christmas Miracle of Jonathan Toomey (2007).
Television roles include appearances in Blue Peter, Primeval, BBC's "Celebrate Oliver!"
presented by Shane Ritchie (broadcast on 26 December 2005) and a guest role on the soap Doctors.
He has also appeared in the fifth and thirteenth episodes of the second season of Torchwood in 2008, as a younger version of protagonist Captain Jack Harkness.