Tharaka-Nithi District was one of the districts of Kenya located in that country's Eastern Province from 1992 to 1998.
Its former boundaries now corresponds to those of Tharaka-Nithi County.
As of the 2009 census Tharaka-Nithi District had an area of 1570 km² and a population of 365,330 (2009 census)[1] Tharaka-Nithi District was created in 1992 from the larger Meru District.
In 1998, the Tharaka-Nithi District was split into two districts, Nithi (Meru South District) and Tharaka,[2] but a 2009 High Court decision declared that split unconstitutional and re-combined the two.
The district was divided into three administrative divisions: