| Competition: | SANFL |
| Match Type: | Grand Final |
| Home: | |
| Home Abbr: | NA |
| Away: | |
| Away Abbr: | STU |
| Home Qtr1: | 4.3 (27) |
| Home Qtr2: | 8.7 (55) |
| Home Qtr3: | 12.9 (81) |
| Home Qtr4: | 17.13 (115) |
| Away Qtr1: | 2.4 (16) |
| Away Qtr2: | 5.6 (36) |
| Away Qtr3: | 10.8 (68) |
| Away Qtr4: | 11.11 (77) |
| Home Score: | 17.13 (115) |
| Away Score: | 11.11 (77) |
| Date: | Saturday, 3 October |
| Stadium: | Adelaide Oval |
| Attendance: | 34,202 |
| Last: | 1930 |
| Next: | 1932 |
The 1931 SANFL Grand Final was an Australian rules football competition. North Adelaide beat Sturt 115 to 77.[1]