| Country: | TZA |
| Type: | T |
| Route: | 3 |
| Maint: | TANROADS |
| Map: | T3 Tansania.svg |
| Map Notes: | The T3 is indicated in yellow. |
| Length Km: | 1,097 |
| Direction A: | East |
| Terminus A: | in Morogoro |
| Junction: | in Dodoma in Manyoni in Mkiwa in Singida in Singida in Nzega in Nyakanazi & in Kasulo |
| Direction B: | West |
| Terminus B: | NR4 at the Rwandan border at Rusumo |
| Regions: | Morogoro, Dodoma, Singida, Tabora, Shinyanga, Geita, Kagera |
| Cities: | Morogoro, Dodoma, Manyoni, Singida, Nzega, Kahama |
| Previous Type: | T |
| Previous Route: | 2 |
| Next Type: | T |
| Next Route: | 4 |
The T3 is a Trunk road in Tanzania. The road runs from the center of Morogoro where the Trunk Road T1 and T3 intersect all the way to Rwanda
Between 1959 and 2022, the Wami bridge was a single lane bridge between the towns of Wami and Dakawa. In 2022 the New Wami Bridge was opened after the Tanzanian government spent TZS 75 Billion to upgrade the bridge and increase safety.[3]
Between the 42km (26miles) streach from Nzega to Tinde, the T3 trunk road shares its designation with T8 trunk road.
Between the 15km (09miles) streach from Nyakanazi to Lusahunga, the T3 trunk road shares its designation with the T9 trunk road.