is a district located in Nagano Prefecture, Japan.
As of 2023, the district has an estimated population of 29,918 with a density of 54.9 persons per km<sup>2</sup>. The total area is 544.5 km<sup>2</sup>.
Municipalities
The district consists of one town and three villages:
- Hakuba
- Ikeda
- Matsukawa
- Otari
;Notes:
History
thumb|320px|right|Map showing original extent of Kitaazumi District in [[Nagano Prefecture:<br /><br />* yellow - areas formerly within the district borders during the early Meiji period<br /> ]]
260px|thumb|right|Colored areas are in this district.
District Timeline
- 1878 - Founded after Azumi District was split into Minamiazumi and Kitaazumi Districts.