Nakakoma (中巨摩郡 Nakakoma-gun) is a district located in Yamanashi Prefecture, Japan.
As of 2006, the district has an estimated population of 16,273. The total area is 9.15 km².
The district has only one town.
- On April 1, 2003 the towns of Shirane, Wakakusa, Kushigata and Kōsai, and the villages of Hatta and Ashiyasu merged to form the new city of Minami-Alps.
- On September 1, 2004 the towns of Ryūō and Shikishima merged with the town of Futaba, from Kitakoma District, to form the new city of Kai.
- On February 20, 2006 the towns of Tamaho and Tatomi merged with the village of Toyotomi, from Higashiyatsushiro District, to form the new city of Chūō.
Coordinates: 35°37′30″N 138°32′06″E / 35.6251°N 138.5350°E