UIR

Uir or UIR may refer to:


 * International Broadcasting Union (IBU); Union Internationale de Radiophonie, UIR
 * Úr, an Old Irish letter
 * University of International Relations, a public university in Beijing, China
 * United Islamic Republic, a fictional nation in Tom Clancy's book Executive Orders
 * Upper information region, airspace
 * Unity and Renewal, political party in Andorra
 * Unidentified infrared emission
 * Université Internationale de Rabat (International University of Rabat)
 * Quirindi Airport, IATA airport code "UIR"