thumb|Location of Kaisō District in Wakayama Prefecture
is a district located in Wakayama Prefecture, Japan.
As of September 1, 2008, the district has an estimated population of 10,988 and a density of . The total area is .
Towns and villages
- Kimino
Mergers
- On April 1, 2005 the town of Shimotsu merged into the city of Kainan.
- On January 1, 2006 the towns of Misato and Nokami merged to form the new town of Kimino.