2021 NASCAR Xfinity Series

The 2021 NASCAR Xfinity Series is the 40th season of the NASCAR Xfinity Series, a stock car racing series sanctioned by NASCAR in the United States. The season will begin at Daytona International Speedway with the NASCAR Racing Experience 300 on February 13. The regular season will end with the Food City 300 at Bristol Motor Speedway on September 17. The NASCAR playoffs will end with the Desert Diamond West Valley Casino 200 at Phoenix Raceway on November 6.

Drivers

 * On September 15, 2020, it was announced that 2019 and 2020 ARCA Menards Series East champion Sam Mayer would move up to the Xfinity Series, driving the JR Motorsports No. 8 car. He will run the second half of the 2021 season after he turns 18 and is eligible to race in the series before running full-time for them in 2022.
 * On September 21, 2020, it was announced that Ross Chastain would be moving up to the Cup Series full-time in 2021, driving the No. 42 for Chip Ganassi Racing, therefore vacating the No. 10 for Kaulig Racing, his full-time Xfinity ride in 2020.
 * On October 22, 2020, it was announced that JR Motorsports CARS Late Model Stock Tour driver and 2020 NASCAR Advance Auto Parts Weekly Series champion Josh Berry would race in the Xfinity Series part-time for JRM, sharing the team's No. 8 car with Mayer. Berry will drive in 12 races during the first half of the season before Mayer's 18th birthday. He drove part-time in the Xfinity Series for the team from 2014 to 2016 as well as one start with Obaika Racing in 2016 and another with NextGen Motorsports in 2017, which was his most recent start in the series.

Schedule
Daytona, Phoenix, Texas, and Circuit of the Americas revealed their race dates ahead of the release of the entire schedule, which NASCAR announced on October 30, 2020.

Schedule changes

 * Further information: History of NASCAR schedule realignments


 * COTA and Nashville Superspeedway are new venues for the Xfinity Series as Chicagoland, Iowa, and Kentucky fall off the schedule.
 * Atlanta, Martinsville, Darlington, and Talladega will go from hosting one race to two.
 * Bristol and Dover will go from having two races on the schedule to one as the Bristol race will be the fall event.