Nishimorokata (西諸県郡, Nishimorokata-gun?) is a district located in Miyazaki Prefecture, Japan.
Following the March 23, 2010 Nojiri merger the district consists of the single town of Takaharu. After the merger, the district has an estimated population of 9,887 and a density of 116 persons per km². The total area is 85.38 km².
Coordinates: 31°55′32″N 130°59′24″E / 31.9256°N 130.990°E / 31.9256; 130.990