| Official Name: | Mdandu |
| Settlement Type: | Town and ward |
| Pushpin Map: | Tanzania |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Tanzania |
| Coordinates: | -9.1467°N 34.6917°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Njombe Region |
| Subdivision Type2: | District |
| Subdivision Name2: | Wanging'ombe |
| Unit Pref: | metric |
| Population As Of: | 2002 |
| Population Total: | 26149 |
| Timezone: | EAT |
| Utc Offset: | +3 |
| Blank Name: | UFI |
| Blank Info: | -2568732 |
Mdandu[1] is a town and ward in Wanging'ombe District of Njombe Region in the southern highlands of Tanzania, East Africa. As of 2002, the population of the ward was 26,149.[2]