| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| GK | Keiren Westwood | 1984-10-23 | 185 | 87 | 2018-06-30 | ||
| D | Dean Holden | 1979-09-15 | 185 | 78 | |||
| D | Marc Tierney | 1985-08-23 | 183 | 71 | |||
| D | Mark Hudson | 1982-03-30 | 185 | 76 | 2019-06-30 | ||
| M | Jermaine Johnson | 1980-06-25 | 185 | 80 | |||
| M | Paul Murray | 1976-08-31 | 175 | 66 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 30.Jun | Queensy Menig (F) | Oldham Athletic | FC Nantes | Confirmed | |
| 30.Jun | Connor Ripley (GK) | Oldham Athletic | Middlesbrough FC | Confirmed | |
| 9.Jul | Connor Ripley (GK) | Middlesbrough FC | Oldham Athletic | Confirmed | |
| 8.Aug | George Elokobi (D) | Wolverhampton Wanderers | Oldham Athletic | Confirmed | |
| 26.Nov | Dean Bouzanis (GK) | Free Agent | Oldham Athletic | Confirmed | |
| 3.Nov | Luca Scapuzzi (F) | Manchester City | Oldham Athletic | Confirmed | |
| 24.Mar | David Stephens (D) | Oldham Athletic | Southampton FC | Confirmed | |
| 18.Mar | Jean-Yves Mvoto Owono (D) | Sunderland AFC | Oldham Athletic | Confirmed | |
| 17.Feb | Sam Mantom (M) | West Bromwich Albion | Oldham Athletic | Confirmed | |
| 7.Jan | Ben Amos (GK) | Manchester United | Oldham Athletic | Confirmed |