Dafydd ap Gruffudd
| Dafydd III | |
|---|---|
| Prince of Aberffraw Lord of Snowdon | |
| Coat of Arms of Dafydd III | |
| Prince of Gwynedd | |
| Reign | 1246–1282 | 
| Predecessor | Dafydd ap Llywelyn | 
| Successor | Abolished | 
| Prince of Wales | |
| Reign | 1282–1283 | 
| Predecessor | Llywelyn ap Gruffudd | 
| Successor | English title: Edward of Carnarvon (1301–1307) Welsh title: Owain Glyndwr (1400/15) | 
| Born | 11 July 1238 Gwynedd, Wales | 
| Died | 3 October 1283 (aged 45) Shrewsbury, England | 
| Spouse | Elizabeth Ferrers | 
| Issue | Amongst others: Llywelyn ap Dafydd Owain ap Dafydd Gwladys ferch Dafydd | 
| House | Aberffraw | 
| Father | Gruffudd ap Llywelyn ap Iorwerth | 
| Mother | Senana ferch Caradog | 
Dafydd ap Gruffudd, also known as Dafydd III (11 July 1238 – 3 October 1283), was a Prince of Gwynedd until after the death of his brother, Llywelyn ap Gruffudd, when he proclaimed himself as the Prince of Wales from 11 December 1282. He became a fugitive after waging war against the English occupation of Wales, but was captured, and then executed on 3 October 1283, which were on the orders of King Edward I of England. He was the last native Prince of Wales before the conquest of Wales by Edward I in 1283.