2021 ARCA Menards Series West

The 2021 ARCA Menards Series West is the sixty-eighth season of the ARCA Menards Series West, a regional stock car racing series sanctioned by NASCAR in the United States. The season began at Phoenix Raceway with the General Tire 150 and will end with another race at Phoenix Raceway, the Arizona Lottery 100, on November 6.

Teams

 * On December 16, 2020, it was revealed in an article on the ARCA website that Bridget Burgess would attempt to run the full season in the West Series in 2021. She ran most of the races in 2020 (except the doubleheader at UMC) after her family team borrowed an old 2007 Toyota from Bill McAnally Racing. The team is seeking to buy newer cars and equipment for 2021.

Drivers

 * On November 2, 2020, it was announced that Jack Wood, who drove part-time in the West Series in 2019 and 2020 for his own team, the No. 78 Toyota for Velocity Racing, would join GMS Racing to replace two-time consecutive East Series champion Sam Mayer in the team's No. 21 car, running full-time in the East Series as well as the Showdown races in the big ARCA Menards Series in 2021. Mayer will move up to the Xfinity Series in June 2021 after he turns 18 and is eligible to race in the series, driving for the JR Motorsports. It has not been announced if Velocity Racing will close down, continue running part-time with another driver, or if Wood will continue to drive for the team, but with a GMS alliance and a switch to Chevrolet.

Crew chiefs

 * On December 16, 2020, it was revealed in an article on the ARCA website that Sarah Burgess, the mother of Bridget Burgess who served as her crew chief in 2020, expressed an interest in stepping off the pit box if possible and potentially racing against her daughter in a West Series race in 2021.

Schedule
Sonoma, Las Vegas, and Phoenix revealed their race dates ahead of the release of the entire schedule, which ARCA announced on December 18, 2020.

Notes:
 * The title sponsors for most races have yet to be determined, and until they are, the title sponsor of the same race the previous year is listed.
 * The race at Phoenix in March will be a combination race with the ARCA Menards Series (highlighted in gold).

Drivers' championship
Note: The pole-winner also receives 1 bonus point, similar to the previous ARCA points system used until 2019 and unlike NASCAR.

(key) Bold – Pole position awarded by time. Italics – Pole position set by final practice results or rainout. * – Most laps led.