Guy Marcel Roux is a French former football player and manager known for being in charge of AJ Auxerre for more than 40 years and for leading the team to national and worldwide prominence.

Association de la Jeunesse Auxerroise, commonly known as AJ Auxerre, is a French professional football club based in the commune of Auxerre in Burgundy. The club was founded in 1905 and will play in Ligue 1 from 2024–25, the top division of French football after promotion from Ligue 2 in 2023–24. Auxerre plays its home matches at the Stade de l'Abbé-Deschamps, on the banks of the Yonne River. The team is managed by Christophe Pélissier.