Kaga (加賀郡, Kaga-gun) is a district located in Okayama Prefecture, Japan.

As of 2020 the district has an estimated population of 10,886 and a population density of 40.50 persons per km. The total area is 268.8 km.

Towns and villages

• Kibichūō - Merger of two towns: Kamogawa from Mitsu District, and Kayō from Jōbō District on October 1, 2004