Njombe District is a former district of the Iringa Region of Tanzania. The current Njombe districts are Njombe Rural District and Njombe Urban District.
Up until 2012 Njombe District was among the districts of the Iringa Region. In 2012, the area that had been within the old Njombe District was incorporated into the new Njombe Region. Within the new region there were created three districts that had wards that were formerly within Njombe District: Njombe Rural District, Njombe Urban District (Njombe Town Council) and Wanging'ombe District. In addition Njombe Region received Makete District and Ludewa District from Iringa Region
