Welf III | |
|---|---|
| Duke of Carinthia | |
 Duke Welf in the Weingarten Stifterbüchlein, c. 1510 | |
| Born | c. 1007 |
| Died | 13 November 1055 Bodman Castle |
| Buried | Weingarten Abbey |
| Noble family | Elder House of Welf |
| Father | Welf II, Count of Altdorf |
| Mother | Imiza of Luxembourg |
Welf III (c. 1007 – 13 November 1055), the last male member of the Swabian line of the Elder House of Welf, was Duke of Carinthia and Margrave of Verona from 1047 until his death.