Prince William Cup
| Sport | Rugby union | 
|---|---|
| Instituted | 2007 | 
| Number of teams | 2 | 
| Country |  South Africa Wales  | 
| Holders | South Africa (2023) | 
| Most titles | South Africa (9 titles) | 
The Prince William Cup was created in 2007 by the Welsh Rugby Union and celebrates 100 years of rugby union history between Wales and South Africa. It is named after the Vice Royal Patron of the WRU, the Prince of Wales, who presented the cup, at the inaugural match, held at the Millennium Stadium in Cardiff on 24 November 2007.