Miwa (美和町 Miwa-chō) was a town located in Kuga District, Yamaguchi, Japan.
On March 20, 2006 Miwa, along with the towns of Kuga, Mikawa, Nishiki, Shūtō and Yū, and the village of Hongō, all from Kuga District, was merged into the expanded city of Iwakuni.
As of 2003, the town had an estimated population of 5,062 and a density of 39.69 persons per km². The total area was 127.53 km².