| Sume Island | |
| Pushpin Map: | Tanzania |
| Pushpin Relief: | Yes |
| Map Width: | 200 |
| Location: | Zanzibar Channel |
| Waterbody: | Indian Ocean |
| Archipelago: | Zanzibar Archipelago |
| Length Km: | 0.3 |
| Width Km: | 0.07 |
| Ethnic Groups: | Hadimu |
| Languages: | Swahili |
| Country Admin Divisions Title: | Region |
| Country Admin Divisions: | Mjini Magharibi Region |
| Country Admin Divisions Title 1: | District |
| Country Admin Divisions 1: | Mjini |
| Country Admin Divisions Title 2: | Ward |
| Country Admin Divisions 2: | Fumba |
Sume Island (Kisiwa cha Sume, in Swahili) is a protected island located in Fumba ward of Mjini District in Mjini Magharibi Region, Tanzania. The island is included in the Menai Bay Marine Conservation Area. Sume reef protects on the biodiverse island. Field observations of Acropora spp. reefs on Sume Island in southern Zanzibar indicate that native Eucheuma denticulatum is flourishing there.[1] [2] [3]