ONR may refer to: Obóz Narodowo-Radykalny, three far-right fascist Polish nationalist organisations known as National Radical Camp Office for Nuclear Regulation in the United Kingdom Office of Naval Research of the U.S. Navy ON-Regel, a standard by the Austrian Standards International ONR, the ICAO airline code for Air One Nine Company, Libya ONR., stage name of Scottish singer Robert Shields Ontario Northland Railway in Ontario, Canada Organisation for National Reconstruction, a defunct political party in Trinidad and Tobago Otter Nelson River School, a high school in Manitoba, Canada