Jack Justin Smith (born 15 September 2001) is an English professional footballer who plays as a midfielder for King's Lynn Town.
Whilst still a first-year scholar in the Stevenage youth academy, Smith went on the first-team's pre-season tour of Jersey, as well as featuring in a number of friendlies ahead of the 2019–20 season. He made his first-team debut as an 81st-minute substitute in a 1–0 home defeat to Bradford City on 20 August 2019. Having made two first-team appearances, Smith signed his first professional contract on 28 August 2019.