Julien Bargeton (born 29 March 1973) is a French politician who has served as a Senator for Paris since 2017. A former member of the Socialist Party (PS), which he left in June 2017 to join La République En Marche! (LREM), he previously served as Deputy Mayor of Paris for Transport (2012–2014) under Bertrand Delanoë and for Finance (2014–2017) under Anne Hidalgo.