is a district located in Kōchi Prefecture, Japan.
As of the January 1, 2005 merger but with 2003 population estimates, the district has an estimated population of 5,348 and a density of 17.4 persons per km<sup>2</sup>. The total area is 307.39 km<sup>2</sup>.
Towns and villages
- Tosa
- Ōkawa
Mergers
- On October 1, 2004, the village of Hongawa, along with the village of Gohoku, from Agawa District, merged into the expanded town of Ino, in Agawa District.
- On January 1, 2005, the villages of Kagami and Tosayama merged into the expanded city of Kōchi.