| NRR | Nasal Respiratory Resistance 
| Others |
| NRR | National Rally Regulations
| Others |
| NRR | National Rescue Ride
| Others |
| NRR | National Research Register
| Others |
| NRR | Nationwide Realty Resources
| Others |
| NRR | Natural Resource Reports
| Others |
| NRR | Natural Resource Restoration
| Others |
| NRR | Navesink River Rowing
| Others |
| NRR | Navigational Road Rally
| Others |
| NRR | Net Reproduction Rate
| Others |
| NRR | Net Run Rate
| Others |
| NRR | Neural Regeneration Research
| Others |
| NRR | Neurological Rehabilitation Resources, P.C.
| Others |
| NRR | New Realm Records, Inc.
| Others |
| NRR | New Rock Revolution
| Others |
| NRR | Newark Riverfront Revival
| Others |
| NRR | No Recognizeable Response
| Others |
| NRR | No Reply Required
| Others |
| NRR | No Responce Required
| Others |
| NRR | No Rules Riders
| Others |
| NRR | Nobles Rock Railroad
| Others |
| NRR | Noise Reduction Rating
| Others |
| NRR | Noise Reduction Ratings
| Others |
| NRR | Non Re Reading
| Others |
| NRR | Non Re-Reading
| Others |
| NRR | Non Recurring Revenue
| Others |
| NRR | Non-Residential Retrofit
| Others |
| NRR | Non-Return Rate
| Others |
| NRR | Normal Rate of Return
| Others |
| NRR | North Reading Room
| Others |
| NRR | North Reef Rippers
| Others |
| NRR | Northern Runes Radio
| Others |
| NRR | Not Rave Related
| Others |
| NRR | Not Really Realistic
| Others |
| NRR | NRC Office of Nuclear Reactor Regulation
| Others |
| NRR | Nuclear Reactor Regulation
| Others |
| NRR | Nuclear Receptor Resource
| Others |
| NRR | Nuclear Risk Reduction
| Others |
| NRR | Nyte's Realm Radio
| Others |
| NRR | Office of Natural Resource Restoration
| Others |
| NRR | UK National Research Register
| Others |