The NASCAR Toyota Series (formerly NASCAR Mexico Corona Series and NASCAR Corona Series) is a NASCAR series in Mexico. It is the most important stock car racing series in the country.

The Desafío Corona was established in 2004 by NASCAR Mexico, a joint-venture between NASCAR and Mexican entertainment group OCESA, with the idea of developing stock car racing in Mexico, and fueling a transition from the country’s historically open-wheel racing fan base to stock car racing.

From 2004 to 2006, the Desafío Corona grew considerably in infrastructure, as well as in number of fans, drivers and sponsors.

The NASCAR Mexico Corona Series was officially presented at the 2006 Desafío Corona award ceremony. Starting in 2007, NASCAR is the sanctioning body of the series. As of 2012 the series was renamed the NASCAR Toyota Series

The series is one of two NASCAR-sanctioned international series, the other one being the NASCAR Canadian Tire Series. Following North American short-track racing trends to cut costs and unify rules among different tours, NASCAR is considering changes to the Canadian Tire and Corona Series where the two series adopt the Grand National rules as to allow the competitors to use the same cars in NASCAR Grand National Division races.

The National Association for Stock Car Auto Racing (NASCAR) is a family-owned and -operated business venture that sanctions and governs multiple auto racing sports events. It was founded by Bill France Sr. in 1947–48. As of 2009, the CEO for the company is Brian France, grandson of Bill France Sr. NASCAR is the largest sanctioning body of stock car racing in the United States. The three largest racing series sanctioned by NASCAR are the Sprint Cup Series, the Nationwide Series, and the Camping World Truck Series. It also oversees NASCAR Local Racing, the Whelen Modified Tour, the Whelen All-American Series, and the NASCAR iRacing.com Series. NASCAR sanctions over 1500 races at over 100 tracks in 39 US states and Canada. NASCAR has presented exhibition races at the Suzuka and Motegi circuits in Japan, Mexico, and Calder Park Raceway in Australia.

NASCAR's headquarters are located in Daytona Beach, Florida, although it also maintains offices in four North Carolina cities: Charlotte, Mooresville, Concord, and Conover. Regional offices are also located in New York City, Los Angeles, Bentonville, Arkansas, and international offices in Mexico City and Toronto. Additionally, owing to its Southern roots, all but a handful of NASCAR teams are still based in North Carolina, especially near Charlotte.

series (singular/plural) may refer to anything of a serial form:

See also: sequence