2021 USL League One season
The 2021 USL League One season was the third season of USL League One. The regular season began on April 10 and ended on October 30, 2021. The playoffs was held from November 6 to 20, 2021.
North Carolina FC joined the league for this season, after leaving the USL Championship in what the team called a "strategic move" to enhance its youth development pathway.
Greenville Triumph SC were the defending champions on both regular season and playoffs. Union Omaha took both titles to won their first League One regular season and championship titles.
Teams
Playoffs
The 2021 USL League One Playoffs was the post-season championship of the USL League One season.Schedule
Final
Championship Game MVP: Damià ViaderAttendance
Average home attendances
Ranked from highest to lowest average attendance.| Team | |||||
| Union Omaha | 14 | 46,013 | 3,884 | 2,405 | 3,287 |
| Forward Madison FC | 14* | 35,896 | 3,607 | 1,529 | 2,761 |
| Greenville Triumph SC | 14 | 33,373 | 4,027 | 1,536 | 2,384 |
| Richmond Kickers | 14 | 29,094 | 3,212 | 1,126 | 2,078 |
| Chattanooga Red Wolves SC | 14 | 25,512 | 2,149 | 1,508 | 1,822 |
| North Carolina FC | 14* | 21,286 | 4,084 | 996 | 1,637 |
| Tormenta FC | 14 | 16,869 | 2,045 | 635 | 1,205 |
| FC Tucson | 14 | 13,825 | 1,556 | 654 | 988 |
| North Texas SC | 14 | 11,883 | 2,212 | 550 | 849 |
| New England Revolution II | 14* | 1,965 | 500 | 100 | 151 |
| Fort Lauderdale CF | 14* | 0 | 0 | 0 | 0 |
| Toronto FC II | 14* | 0 | 0 | 0 | 0 |
| Total | 168 | 235,716 | 4,084 | 100 | 1,721 |
Regular season statistical leaders
Hat-tricks
;Notes– Home team
– Away team