This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Iwanai District, Hokkaido" – news · newspapers · books · scholar · JSTOR (December 2009) (Learn how and when to remove this template message)
Iwanai (岩内郡, Iwanai-gun) is a district located in Shiribeshi Subprefecture, Hokkaidō, Japan.
As of 2004, the district has an estimated population of 22,977 and a density of 61.17 persons per km2. The total area is 375.60 km2.
