Iwafune (岩船郡, Iwafune-gun) is a district located in Niigata Prefecture, Japan.
As of July 1, 2019, the district has an estimated population of 5,644 with a density of 18.2 persons per km2.
The district consists of two villages: Iwafune's name is from the Ancient Japanese Ritsuryo System.
The district seat was located at Murakami-Honmachi (now part of the current city of Murakami).
This Niigata Prefecture location article is a stub.