Ali IV of Bornu
| Ali IV | |
|---|---|
| Mai of the Kanem–Bornu Empire | |
| Reign | 1750–1791 |
| Predecessor | Dunama VIII Gana |
| Successor | Ahmad |
| Issue | Ahmad Muhammad IX Ngileruma |
| Dynasty | Sayfawa dynasty |
| Father | Hamdan |
Ali IV (ʿAlī bin Ḥamdūn or ʿAlī bin al-Ḥājj Dunama) was the mai of the Kanem–Bornu Empire in 1750–1791.