Kahoku (鹿北町 Kahoku-machi) was a town located in Kamoto District, Kumamoto, Japan.
On January 15, 2005 Kahoku, along with the towns of Kamoto, Kaō and Kikuka, all from Kamoto District, was merged into the expanded city of Yamaga and no longer exists as an independent municipality.
As of 2003, the town had an estimated population of 5,065 and the density of 58.78 persons per km². The total area was 86.17 km².