The 73rd 24 Hours of Le Mans (French: 73e 24 Heures du Mans) was a non-championship 24-hour automobile endurance race held for Le Mans Prototype and Grand Touring cars from 18 to 19 June 2005 at the Circuit de la Sarthe close by Le Mans, France. It was the 73rd running of the event, as organised by the automotive group, the Automobile Club de l'Ouest (ACO) since 1923. A test day was held two weeks prior to the race on 5 June. Approximately 230,000 people attended the race.