Mikawa (美川町 Mikawa-chō) was a town located in Kuga District, Yamaguchi, Japan.
On March 20, 2006 Mikawa, along with the towns of Kuga, Miwa, 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 1,714 and a density of 22.60 persons per km². The total area was 75.85 km².