Higashiyama (東山町 Higashiyama-chō) was a town located in Higashiiwai District, Iwate, Japan.
On September 20, 2005 Higashiyama, along with the towns of Daitō and Senmaya, the villages of Kawasaki and Murone, all from Higashiiwai District, and the town of Hanaizumi, from Nishiiwai District, was merged into the expanded city of Ichinoseki.
As of 2003, the town had an estimated population of 8,192 and a density of 93.39 persons per km². The total area was 87.72 km².