ONR
The abbreviation ONR stands for:
- National Radical Camp (Polish: Obóz Narodowo-Radykalny ), former Polish right-wing extremist party
- National Radical Camp (1993) (Polish: Obóz Narodowo-Radykalny ), neo-fascist Polish organization
- ON rule , rule of the Austrian Standards Institute; see ÖNORM
- Office of Naval Research , a United States Navy research facility