Minami-Uonuma (南魚沼郡 Minami-Uonuma-gun?) is a district located in Niigata Prefecture, Japan.
As of 2003, the district has an estimated population of 72,908 and a density of 77.41 persons per km². The total area is 941.82 km².
Coordinates: 36°52′08″N 138°49′01″E / 36.869°N 138.817°E