Julien Masson (born 18 June 1998) is a French professional footballer who plays as a midfielder for Championnat National club Valenciennes.

Born in Valenciennes, Masson began playing for local side Valenciennes at age 13.

Masson made his professional debut for Valenciennes in a Ligue 2 0–0 tie with Red Star on 5 May 2017.

[1] On 13 November 2017, Masson signed his first professional contract with Valenciennes, keeping him at the club for 4 years.

[2] Despite an aborted summer transfer to Ligue 1 side Angers, Masson was a mainstay in Valenciennes' squad, making 34 league appearances as he was voted the club's 2019 player of the year by the editorial staff of La Voix du Nord.