Krupa na Uni (Cyrillic: Крупа на Уни) is a municipality in northern Republika Srpska, Bosnia and Herzegovina. It is situated in the north-western part of the Republika Srpska entity and the central part of the Bosanska Krajina region. It was created from part of the pre-war municipality of Bosanska Krupa (the other part of the pre-war municipality that is now in the entity of Federation of Bosnia and Herzegovina).
It is located between the municipality of Bosanska Krupa to the south and west, the municipality of Novi Grad to the north, and the municipality of Oštra Luka to the east.
In 2006, the majority of the population of the municipality were ethnic Serbs.
Krupa na Uni municipality
, Gornji Bušević
, Donji Dubovik
, Donji Petrovići
, Mali Dubovik
, Srednji Bušević
, Srednji Dubovik
, Srednji Petrović
Coordinates: 44°53′N 16°09′E / 44.883°N 16.150°E