Welf II | |
|---|---|
| Count of Altdorf | |
 Count Welf II in the Weingarten Stifterbüchlein, c. 1510 | |
| Died | 10 March 1030 Bodman Castle |
| Buried | Weingarten Abbey |
| Noble family | Elder House of Welf |
| Spouse(s) | Imiza of Luxembourg |
| Issue | Welf, Duke of Carinthia Kunigunde of Altdorf |
| Father | Rudolf II, Count of Altdorf |
| Mother | Ita of Öhningen |
Welf II (c. 960/70 - died 10 March 1030) was a Swabian count and a member of the Elder House of Welf.