| Club: | Hartford Athletic |
| Season: | 2021 |
| League: | USL Championship |
| Chrtitle: | Owner |
| Mgrtitle: | Head coach |
| Manager: | Harry Watling |
| Stadium: | Dillon Stadium |
| Cup1: | USLC Playoffs |
| Cup2: | U.S. Open Cup |
| Highest Attendance: | 5,138 (8/4 vs. TBR) |
| Largest Win: | HFD 7–0 NY (6/5) |
| Pattern La1: | _hartford20h |
| Pattern B1: | _hartford20h |
| Pattern Ra1: | _hartford20h |
| Pattern Sh1: | _blue_stripes_adidas |
| Pattern So1: | _color_3_stripes_blue |
| Leftarm1: | 009943 |
| Body1: | 009943 |
| Rightarm1: | 009943 |
| Shorts1: | 009943 |
| Socks1: | 009943 |
| Pattern La2: | _hartford20a |
| Pattern B2: | _hartford20a |
| Pattern Ra2: | _hartford20a |
| Pattern Sh2: | _blue_stripes_adidas |
| Pattern So2: | _color_3_stripes_blue |
| Leftarm2: | white |
| Body2: | white |
| Rightarm2: | white |
| Shorts2: | white |
| Socks2: | white |
| American: | true |
| Prevseason: | 2020 |
| Nextseason: | 2022 |
The 2021 Hartford Athletic season is the club's third season of existence and their third in the USL Championship, the second tier of American soccer.[1]
To start the season, Hartford Athletic will allow 50% capacity at home games at Dillon Stadium.[2]
Starting with the home game on May 29, they will be allowed to have a full capacity at home games.[3]
See main article: 2021 USL Championship season. Source:[4]