| Group 1 race | |
| Location | Caulfield Racecourse, Melbourne, Australia | 
|---|---|
| Inaugurated | 1951 | 
| Race type | Thoroughbred | 
| Sponsor | Yulong Park (2016) | 
| Race information | |
| Distance | 1,400 metres | 
| Surface | Turf | 
| Qualification | Three year old and older | 
| Weight | Open handicap | 
| Purse | $500,000 (2016) | 
The Sir Rupert Clarke Stakes, registered as the Invitation Stakes, is a Melbourne Racing Club Group 1 Thoroughbred open handicap horse race, run over a distance of 1400 metres at Caulfield Racecourse, Melbourne, Australia in late September.Total prize money for the race is A$500,000 with the winner receiving $300,000.
Prior to 1994, the race was held on Royal Melbourne Show Day, which was observed on the Thursday in the last full week of September as a public holiday. The race was renamed in 2005 after former chairman of the Victorian Amateur Turf Club, Sir Rupert Clarke who died in 2005.