Kitaadachi (北足立郡, Kita-Adachi-gun) is a district located in Saitama Prefecture, Japan.

As of September 1, 2005, the district has an estimated population of 36,979 and a density of 2,498.58 persons per km. The total area is 14.80 km. (These numbers are excluding those of Fukiage, which merged with a city outside the district on October 1, 2005.)

• Ina

• On October 1, 2005, the town of Fukiage merged into the city of Kōnosu.

35°58′19″N 139°38′10″E / 35.972°N 139.636°E / 35.972; 139.636