Nishiuwa (西宇和郡, Nishiuwa-gun) is a district located in Ehime Prefecture, Japan.
As of 2007, the district has an estimated population of 12,304 with a total area of 94.34 km2.
The district consists of one town.
33°26′06″N 132°12′04″E / 33.43500°N 132.20111°E