Mazda Raceway Laguna Seca (previously known as Laguna Seca Raceway) is a paved road racing track used for both auto racing and motorcycle racing, originally constructed in 1957 near both Salinas and Monterey, California, USA.

The current racetrack is 2.238 miles (3.602 km) in length with a 180 feet (55 m) elevation change. It has eleven turns, including the famous "Corkscrew" at Turns 8 and 8A. A variety of racing, exhibition and entertainment events are held at the raceway, ranging from superkarts to sports car racing to music festivals.

The name Laguna Seca is Spanish for "dry lagoon". The area where the track is was originally a lake. The course was originally built around the lake, which has since dried up entirely. An artificial pond has since been added.