The 2008 American Le Mans Series season was the 38th season for the IMSA GT Championship, with the tenth season known as the American Le Mans Series. It was a series for Le Mans Prototypes (LMP) and Grand Tourer (GT) race cars divided into four classes: LMP1, LMP2, GT1, and GT2. It began March 15 and ended October 18 after eleven races.