2025 NASCAR Xfinity Series

Justin Allgaier, the defending series champion.

The 2025 NASCAR Xfinity Series will be the 44th season of the NASCAR Xfinity Series, a stock car racing series sanctioned by NASCAR in the United States. The season will start in mid-February with the Daytona 300 at Daytona International Speedway and will end with the NASCAR Xfinity Series Championship Race in early November at Phoenix Raceway.

The 2025 season will be the first season in which The CW will be the exclusive broadcaster of the NASCAR Xfinity Series, under NASCAR's new TV deal that will take place until 2031.

Justin Allgaier of JR Motorsports enters the season as the defending series champion.