| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| D | Alan Sheehan | 1986-09-14 | 182 | 82 | |||
| D | Jean-Francois Lescinel | 1986-10-02 | 188 | 78 | |||
| D | Kevin Amankwaah | 1982-05-19 | 185 | 76 | |||
| D | Sean Morrison | 1991-01-08 | 194 | 78 | 2018 jun | ||
| M | David Prutton | 1981-09-12 | 185 | 73 | |||
| M | Jonathan Douglas | 1981-11-22 | 180 | 75 | |||
| M | Matt Ritchie | 1989-09-10 | 173 | 71 | 2021-06-30 | ||
| F | Charlie Austin | 1989-07-05 | 188 | 84 | 2020-06-30 | ||
| F | Jonathan Obika | 1990-09-12 | 183 | 76 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 31.Aug | Sean Murray (M) | Watford FC | Swindon Town | Confirmed | |
| 30.Jun | Louis Thompson (M) | Swindon Town | Norwich City | Confirmed | |
| 30.Jun | Michael Doughty (M) | Swindon Town | Queens Park Rangers | Confirmed | |
| 21.Apr | Jake Kean (GK) | Swindon Town | Norwich City | Confirmed | |
| 15.Apr | Jake Kean (GK) | Norwich City | Swindon Town | Confirmed | |
| 1.Feb | Louis Thompson (M) | Norwich City | Swindon Town | Confirmed | |
| 31.Jul | Fabien Robert (F) | FC Lorient | Swindon Town | Confirmed | |
| 1.Sep | Jonathan Obika (F) | Tottenham Hotspur | Swindon Town | Confirmed | |
| 17.Aug | Nile Ranger (F) | Swindon Town | Blackpool FC | Confirmed | |
| 8.Aug | Jordan Turnbull (D) | Southampton FC | Swindon Town | Confirmed |