Iwase (岩瀬村 Iwase-mura) was a village located in Iwase District, Fukushima, Japan.
As of 2003, the village had an estimated population of 5,993 and a density of 93.31 persons per km². The total area was 64.23 km².
On April 1, 2005 Iwase, along with the town of Naganuma, was merged into the city of Sukagawa.