The 2013 American Le Mans Series Monterey was an auto racing event held at Mazda Raceway Laguna Seca, near Monterey, California on May 9–11, 2013. The four-hour race was the third round of the 2013 American Le Mans Series season. Germans Klaus Graf and Lucas Luhr defended their 2012 Monterey win with overall victory for Muscle Milk Pickett Racing, while Luhr became the winningest driver in American Le Mans Series history. Scott Tucker and Marino Franchitti took P2 honors for Level 5 Motorsports, while Mike Gausch and Luis Díaz won the PC category. Corvette Racing's Jan Magnussen and Antonio García led GT and Henrique Cisneros, Jr. and Nick Tandy won in GTC.