| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| D | Scott Cuthbert | 1987-06-15 | 188 | 89 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 31.Aug | Nick Hegarty (M) | Grimsby Town | St Mirren | Confirmed | |
| 26.Jul | Sean Lynch (F) | Falkirk FC | St Mirren | Confirmed | |
| 16.Jul | Marc McAusland (D) | Queen Of The South | St Mirren | Confirmed | |
| 8.Jul | Chris Smith (GK) | St Mirren | Dunfermline Athletic | Confirmed | |
| 12.Jul | Jure Travner (D) | Watford FC | St Mirren | Confirmed | |
| 5.Jul | Jack Ross (M) | St Mirren | Hamilton Academical FC | Confirmed | |
| 6.Jul | Andy Dorman (M) | St Mirren | Crystal Palace | Confirmed | |
| 26.Jun | Gary Mason (M) | St Mirren | Unknown | Confirmed | |
| 26.Jun | Will Haining (D) | St Mirren | Unknown | Confirmed | |
| 26.Jun | Craig Dargo (M) | St Mirren | St Mirren | Extension |