| Wulfhilde of Saxony | |
| Succession: | Duchesses consort of Bavaria |
| Birth Date: | 1072 |
| Death Date: | 29 December 1126 |
| Death Place: | Weingarten Abbey |
| Burial Place: | Weingarten Abbey |
| Consort: | yes |
| Spouse: | Henry IX, Duke of Bavaria |
| Issue: | Henry X, Duke of Bavaria Conrad of Bavaria Sophia of Bavaria Judith of Bavaria, Duchess of Swabia Matilda Welf VI Wulfhilde |
| House: | Billung |
| Father: | Magnus, Duke of Saxony |
| Mother: | Sophia of Hungary |
Wulfhilde Billung of Saxony (1072 - 29 December 1126) was the eldest daughter of Magnus, Duke of Saxony and his wife, Sophia of Hungary.
In about 1095 she married Duke Henry IX of Bavaria. As a result of this marriage, part of the Billung possessions came into the hands of the House of Guelph. They had the following children:
Wulfhilde died in 1126 and was buried at Weingarten Abbey.