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 km<sup>2</sup>. The total area was 99.79 km<sup>2</sup>.
On October 1, 2004, KÃ Âzan, 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.