The 2021 Arizona State Sun Devils football team represented Arizona State University in the 2021 NCAA Division I FBS football season.

On April 19, 2024, Arizona State vacated all 8 of their wins from the 2021 season due to NCAA violations stemming from Arizona State offering recruiting inducements, impermissible tryouts and tampering.

Sources: Outgoing The Sun Devils lost fifteen players via transfer portal for the 2021 season.

Incoming The Sun Devils add six players via transfer portal from the 2021 season.

Arizona State head coach Herm Edwards, quarterback Jayden Daniels, and defensive back Chase Lucas were in attendance to field questions from the media.