| Group 1 race | |
| Location | Caulfield Racecourse, Melbourne, Australia |
|---|---|
| Inaugurated | 1946 |
| Race type | Thoroughbred |
| Sponsor | Schweppes (2016) |
| Race information | |
| Distance | 1,600 metres |
| Surface | Turf |
| Track | Left-handed |
| Qualification | Three year old fillies |
| Weight | Set weights – 55 kg |
| Purse | $500,000 (2016) |
The Thousand Guineas is a Melbourne Racing Club Group 1 Thoroughbred horse race for three year old fillies at set weights run over a distance of 1600 metres at Caulfield Racecourse, Melbourne, Australia in early October. Total prize money for the race is A$500,000.
Between 1988 and 2013 the race was scheduled on the second day of the MRC Spring Carnival which is held on a Wednesday but it was moved to the first day in 2014. Prior to 1988 the race was run on the third day of the carnival on the Caulfield Cup racecard.
† Deadheat