2009 Monterey Sports Car Championships

The 2009 Monterey Sports Car Championships presented by Patrón was the tenth and final round of the 2009 American Le Mans Series season.

It took place at Mazda Raceway Laguna Seca, Monterey, California on October 11, 2009.

The race was won by the Acura of de Ferran Motorsports, driven by Simon Pagenaud and retiring driver Gil de Ferran, which wore a tribute livery based on Jim Hall's Chaparrals.

The GT2 class was won by the #45 Flying Lizard Motorsports Porsche after contact with the #3 Corvette Racing while approaching the finish line on the final lap.

Cars failing to complete 70% of winner's distance are marked as Not classified (NC).