Kamitakai (上高井郡, Kamitakai-gun) is a district located in Nagano Prefecture, Japan.
As of 2003, the district has an estimated population of 19,073 with a density of 162.23 persons per km2. The total area is 117.57 km2.
The district consists of one town and one village:
36°39′58″N 138°24′43″E / 36.666°N 138.412°E / 36.666; 138.412