was a town located in Jinseki District, Hiroshima Prefecture, Japan.
As of 2003, the town had an estimated population of 4,397 and a density of 34.50 persons per km2. The total area was 127.46 km2.
On November 5, 2004, Sanwa, along with the towns of Jinseki and Yuki, and the village of Toyomatsu (all from Jinseki District), was merged to create the town of Jinsekikōgen.[1]