| Ali bin Said | |
| Succession: | Sultan of Zanzibar |
| Reign: | February 13th 1890 - March 5th 1893 |
| Predecessor: | Khalifah bin Said |
| Successor: | Hamad bin Thuwaini |
| House: | Al Said |
| House-Type: | Dynasty |
| Father: | Said bin Sultan |
Sayyid Ali bin Said al-Busaidi, GCSI, (c. 1854 - March 5, 1893) (Arabic: علي بن سعيد البوسعيد) was the fourth Sultan of Zanzibar. He ruled Zanzibar from February 13, 1890, to March 5, 1893. In June 1890 he was forced to accept a British protectorate over his dominions.[1]
He was succeeded by his nephew, Hamad bin Thuwaini Al-Busaid.