The 2000 American Le Mans Series was the second running of the IMSA American Le Mans Series, and overall the 30th season of an IMSA GT Championship, dating back to the 1971 edition. It was a series for Le Mans Prototypes (LMP) and Grand Touring (GT) race cars divided into 3 classes: LMP, GTS, and GT. It began March 18, 2000 and ended December 31, 2000 after 12 races.

The American Le Mans Series (ALMS) was a sports car racing series based in the United States and Canada. It consisted of a series of endurance and sprint races, and was created in the spirit of the 24 Hours of Le Mans.