Mii (三井郡 Mii-gun?) is a district located in Fukuoka Prefecture, Japan.
As of 2003 statistics (but following the merger of Kitano), the district has an estimated population of 15,378 and a density of 674 persons per km². The total area is 22.83 km².
Coordinates: 33°23′19″N 130°36′25″E / 33.3887°N 130.607°E