South Australian Derby
| Class | Group 1 |
|---|---|
| Location | Morphettville Racecourse, Adelaide, Australia |
| Inaugurated | 1860 (as The Thebarton Derby) |
| Race type | Thoroughbred – Flat racing |
| Sponsor | Thomas Farms (2025) |
| Race information | |
| Distance | 2,500 metres |
| Surface | Turf |
| Track | Left-handed |
| Qualification | Three-year-olds colts and geldings – 56+1⁄2 kg fillies – 54+1⁄2 kg |
| Weight | Set Weights |
| Purse | A$1,000,000 (2025) |
The South Australian Derby is a South Australian Jockey Club Group 1 Thoroughbred horse race for three-year-olds, at set weights, run over a distance of 2,500 metres at Morphettville Racecourse in Adelaide, Australia during the SAJC Autumn Carnival.