is one of the 5 districts of the Ruvuma Region
. It is bordered to the North by the Morogoro Region
, to the East by the Tunduru District
, to the South by Mozambique
and to the East by the Songea Urban
and Songea Rural
According to the 2002 Tanzania National Census, the population of the Namtumbo District was 185,131.
The Namtumbo District is administratively divided into 13 wards: