| Horse race | |
| Location | Newmarket Racecourse Newmarket, England |
|---|---|
| Inaugurated | 1758 |
| Race type | Flat / Thoroughbred |
| Race information | |
| Distance | 4 miles 1½ furlongs |
| Surface | Turf |
| Qualification | Four-year-olds |
| Weight | 8 st 10 lb (colts) 8 st 7 lb (fillies) |
The 1400 Guineas Stakes was a flat horse race in Great Britain open to thoroughbreds aged four years. It was run at Newmarket and was one of the most important races of the second half of the 18th century.