| Colorcode: | Red |
| Leader: | Abdulrahman Muhammad Babu |
| Foundation: | 1963 |
| Ideology: | Zanzibari nationalism Marxism-Leninism Arab socialism Republicanism Arab interests |
| Country: | Tanzania |
| Dissolved: | 8 March 1964 |
| Split: | Zanzibar Nationalist Party |
| Merged: | Afro-Shirazi Party |
| Position: | Far-left |
The Umma Party was a socialist political party in Zanzibar. It was founded in 1963 by disaffected socialist Arabs from the ruling Zanzibar Nationalist Party. It was led by Abdulrahman Muhammad Babu and supported the Afro-Shirazi Party during the 1964 Zanzibar Revolution. Babu was made Minister of External Affairs following the revolution. The party merged into the Afro-Shirazi Party on 8 March 1964.