Arnaud Valois studied acting at Cours Florent. He got discovered in Charlie Says by Nicole Garcia where he played one of the lead roles alongside Jean-Pierre Bacri, Vincent Lindon and Benoît Magimel. He went on to play in Cliente by Josiane Balasko and Girl on the Train by André Techine. After a few year break from acting, he's back on the silver screen in 2017 in 120 BPM by Robin Campillo in which he plays Nathan, the main character, alongside Nahuel Perez Biscayart and Adèle Haenel.