| Iwiji | |
| Native Name: | Kata ya Iwiji |
| Native Name Lang: | sw |
| Settlement Type: | Ward |
| Pushpin Map: | Tanzania |
| Coordinates: | -9.2428°N 33.204°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Mbeya Region |
| Subdivision Type2: | District |
| Subdivision Name2: | Mbeya Rural |
| Subdivision Type3: | Ward |
| Subdivision Name3: | Iwiji |
| Population As Of: | 2016 |
| Population Total: | 9,973 |
| Population Density Km2: | auto |
| Postal Code: | 53213 |
| Postal Code Type: | Postcode |
| Timezone: | EAT |
| Utc Offset: | +3 |
Iwiji is an administrative ward in the Mbeya Rural district of the Mbeya Region of Tanzania. In 2016 the Tanzania National Bureau of Statistics report there were 9,973 people in the ward, from 15,056 in 2012.
The ward has 3 villages, and 24 hamlets.