| Acronym | Definition |
|---|
| NSR | New Source Review (air quality permit program of federal Clean Air Act for nonattainment pollutant) |
| NSR | North Staffordshire Railway (est. 1845; UK) |
| NSR | Norske Samers Riksforbund (Norwegian: Norwegian Sami Association) |
| NSR | National Scouting Report (college athletics; Alabaster, AL) |
| NSR | Non Shared Resources |
| NSR | Nvidia Shading Rasterizer |
| NSR | Network Storage Router |
| NSR | Normal Sinus Rhythm |
| NSR | Noise to Signal Ratio |
| NSR | Net Smelter Royalty (mining) |
| NSR | North Sea Region |
| NSR | Non-Significant Risk (clinical trial) |
| NSR | Northern Sky Research |
| NSR | No Signature Required (deliveries) |
| NSR | Natural Stress Relief (meditation technique) |
| NSR | New Silk Road |
| NSR | National Scenic Riverway |
| NSR | Norton Save and Restore (software) |
| NSR | Nazi-Soviet Relations |
| NSR | NASCAR SimRacing |
| NSR | National Security Review |
| NSR | Nemecká Spolková Republika (Czech: West Germany) |
| NSR | Nominal Slow Rate (US NASA) |
| NSR | National Soccer Ranking (Naperville, IL) |
| NSR | NATO Staff Requirement |
| NSR | Non-Stop-Routing (Avici) |
| NSR | National Security Research, iNC |
| NSR | Normalized Stoichiometric Ratio |
| NSR | Newcastle Student Radio (UK) |
| NSR | Nuclear Science Reference |
| NSR | Not So Random (Entertainment Company) |
| NSR | Negative Scrub Radius (vehicle steering) |
| NSR | Northside Security Response (Australia) |
| NSR | Near Surface Repository |
| NSR | National Simulation Resource for Transport, Metabolism and Reaction |
| NSR | New Special Recovery |
| NSR | Neutron Source Reactor |
| NSR | Naval Staff Requirement |
| NSR | Neutral Site Region |
| NSR | No Specific Response |
| NSR | New Source Requirement |
| NSR | NISN Service Request |
| NSR | No Sign of Recurrence (oncology) |
| NSR | No Staff Responsibility |
| NSR | National Strategy Review |
| NSR | Not Swap Related |
| NSR | Network Storage Resource |
| NSR | Natal Solvent Recovery (South Africa) |
| NSR | Neck Support Ring (Bottling Industry) |
| NSR | No Shipping Required |
| NSR | Non-Self-Recoverable |
| NSR | No Stolen Report (used by police departments in radio communications regarding a vehicle) |