The 1931 Brisbane Rugby League premiership was the 23rd season of Brisbane's semi-professional rugby league football competition. Eight teams from across Brisbane competed for the premiership, which culminated in Fortitude Valley defeating Past Grammars (now Norths Devils) 27–9 in the grand final.
| Team | Pld | W | D | L | PF | PA | PD | Pts | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Fortitude Valley | 14 | 9 | 1 | 4 | 229 | 190 | +39 | 19 | |
| 2 | Southern Suburbs | 14 | 9 | 0 | 5 | 225 | 180 | +45 | 18 | |
| 3 | Past Grammars | 14 | 8 | 1 | 5 | 191 | 141 | +50 | 17 | |
| 4 | University Students | 14 | 8 | 0 | 6 | 214 | 179 | +35 | 16 | |
| 5 | Cooparoo | 14 | 7 | 1 | 6 | 224 | 204 | +20 | 15 | |
| 6 | Western Suburbs | 14 | 7 | 1 | 6 | 201 | 154 | -47 | 15 | |
| 7 | Wynnum | 14 | 3 | 1 | 9 | 157 | 332 | -175 | 7 | |
| 8 | Past Brothers | 14 | 2 | 1 | 11 | 140 | 269 | -129 | 5 |
| Home | Score | Away | Match Information | ||
|---|---|---|---|---|---|
| Date and Time | Venue | ||||
| Semifinals | |||||
| Carlton | 17-5 | University Students | 5 September 1931 | Davies Park | |
| Past Grammars | 12-11 | Fortitude Valley | 5 September 1931 | Davies Park | |
| Preliminary Final | |||||
| Past Grammars | 16-13 | Carlton | 12 September 1931 | Brisbane Exhibition Grounds | |
| Grand Final | |||||
| Fortitude Valley | 27-9 | Past Grammars | 19 September 1931 | Davies Park | |
Fortitude Valley 27 (Tries: Scott, B. Donovan, Martin, Wing 2, Shields. Goals: Shields 3)
Past Grammars 9 (Tries: Morrison. Goals: Holden 3)[3]