Sawa District, Gunma

 is a rural district located in Gunma Prefecture, Japan. As of January 2015, the district had an estimated population of 36,952 and an area of 25.78 km2, with a population density of 1430 people per square kilometer.
Towns and villages.
All of the city of Isesaki and part of the city of Maebashi were formerly part of the district.
History.
Sawa District was created on April 1, 1896 by the merger of Sai District and Nawa District. At the time of its creation, it was organized into three towns (Isesaki, Sakai and Tamamura) and 13 villages.