2021 Atlanta United 2 season

The 2021 Atlanta United 2 season was the team's fourth year of existence as well as their fourth season in the USL Championship, the second tier of the American soccer pyramid.

Players
As of August 16, 2021. The squad of Atlanta United 2 will be composed of an unrestricted number of first-team players on loan to the reserve team, players signed to ATLUTD2, and Atlanta United Academy players. Academy players who appear in matches with ATLUTD2 will retain their college eligibility.

Appearances and goals
Numbers after plus-sign(+) denote appearances as a substitute.

! colspan=16 style=background:#dcdcdc; text-align:center|Players who have played for Atlanta United 2 this season but have left the club:


 * }
 * }