| Abbreviation | Definition |
|---|---|
| NRRF | North Russian Relief Force |
| NZ | Demilitarized Zone |
| ODAB | Obyomno-Detoniruyuschchaya Aviatsionnaya Bomba |
| OOO | Obshestvo S Ogranichennoy Otvetstvennjctyu |
| OREA | Office of Russian and European Analysis |
| ORGJ | Orgj. is the Romanized abbreviation for organization in European-Slavic and Cyrillic languages. |
| RAACI | Russian Association of Allergology and Clinical Immunology |
| RABN | Russian AIDS Banner Network |
| RACU | Russian American Christian University |
| RAEC | Russian Association for Electronic Communications |
| RAGAS | Russian American Genealogical Archival Service |
| RAIC | Russian-American Industrial Corporation |
| RAIU | Russian Anomalous Intervention Unit |
| RALR | Russian Alphabet Lore Reloaded |
| RAMS | Russian Academy of Medical Sciences |
| RANSAC | Russian American Nuclear Security Advisory Council |
| RAOA | Russian American Officers Association |
| RAPM | Russian Association of Proletarian Musicians |
| RBN | Russian Business Network |
| RBSM | Russian Boarding School Malta |