The 91st 24 Hours of Le Mans, also known as the Centenary 24 Hours of Le Mans, was an automobile endurance race for teams of three drivers each racing Prototype and Grand Touring cars held from 10 to 11 June 2023 at the Circuit de la Sarthe, near Le Mans, France, in front of 325,000 spectators. It was the 91st edition of the Automobile Club de l'Ouest's 24-hour race, its centenary anniversary edition and the fourth round of the 2023 FIA World Endurance Championship (WEC). The week before the event, on 4 June, there was a test day.

The Ferrari 499P is a sports prototype built by Scuderia Ferrari to compete in the FIA World Endurance Championship in the Le Mans Hypercar category since 2023. The introduction of the 499P marks 50 years since Ferrari last fielded a factory-backed sports prototype that contested for the overall win at the 24 Hours of Le Mans, and one of the 499Ps raced with the number 50 as a tribute.