Hubert Fournier has signed a two-year deal to become the new manager of Lyon.
The 46-year-old, who has been in charge of Reims for the last four years, takes over from Remi Garde.
"I am delighted to be here," he said on Lyon's official website. "First I wanted to say thank you for the confidence that the president (Jean-Michel Aulas) and (adviser) Bernard Lacombe have put in me. Thank you also for the challenge that presents itself."
Fournier, a former defender who spent two years at the Stade de Gerland as a player, led Reims to promotion to the French Ligue 1 and this season led them to 11th place.
The president said they had interviewed seven candidates, but Fournier had been at the top of their list.
"We have made a good choice, I'm convinced of that," Aulas said.
Lacombe added: "He has done a tremendous job in Reims. I hope we will share great moments together."