is a district located in Yamanashi Prefecture, Japan.
As of 1 October 2020, the district has a population of 20,909 with a density of 2,386 persons per km<sup>2</sup>. The total area is 9.08 km<sup>2</sup>.
The district consists of one town:
Nakakoma District was founded from the split of Koma District during the early Meiji period establishment of the municipalities system on July 22, 1878 and initially consisted of 52 villages.