| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| GK | David Lucas | 1977-11-23 | 188 | 84 | |||
| D | Alan Sheehan | 1986-09-14 | 182 | 82 | |||
| D | Callum Kennedy | 1989-01-06 | 185 | 81 | |||
| D | Gordon Greer | 1980-12-14 | 188 | 83 | |||
| D | Jean-Francois Lescinel | 1986-10-02 | 188 | 78 | |||
| D | Kevin Amankwaah | 1982-05-19 | 185 | 76 | |||
| D | Scott Cuthbert | 1987-06-15 | 188 | 89 | |||
| M | Alan O'Brien | 1985-02-20 | 178 | 71 | |||
| M | Anthony McNamee | 1984-07-13 | 168 | 65 | |||
| M | Craig Easton | 1979-02-26 | 178 | 71 | |||
| M | Daniel Ward | 1990-12-09 | 180 | 88 | |||
| M | Jean-Paul McGovern | 1980-10-03 | 173 | 75 | |||
| M | Jonathan Douglas | 1981-11-22 | 180 | 75 | |||
| M | Lee Peacock | 1976-10-09 | |||||
| M | Lloyd Macklin | 1989-08-23 | 175 | 78 | 2012 | ||
| M | Matt Ritchie | 1989-09-10 | 173 | 71 | 2021-06-30 | ||
| M | Michael Timlin | 1985-03-19 | 173 | 74 | |||
| M | Simon Ferry | 1988-01-11 | 175 | 70 | |||
| F | Ben Hutchinson | 1987-11-27 | 180 | 79 | |||
| F | Billy Paynter | 1984-07-13 | 183 | 79 | 2013 | ||
| F | Charlie Austin | 1989-07-05 | 188 | 84 | 2020-06-30 | ||
| F | Temitope Obadeyi | 1989-10-29 | 179 | 75 |
| 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 |