Kōzan, Hiroshima

Kōzan (甲山町) was a town located in Sera District, Hiroshima Prefecture, Japan.

As of 2003, the town had an estimated population of 6,732 and a density of 67.46 persons per km2. The total area was 99.79 km2.

On October 1, 2004, Kōzan, along with the town of Seranishi (also from Sera District), was merged into the expanded town of Sera and no longer exists as an independent municipality.