| Acronym | Definition |
|---|
| CNR | Consiglio Nazionale delle Ricerche (Italian National Research Council) |
| CNR | Canadian National Railway |
| CNR | Contrast-to-Noise Ratio |
| CNR | College of Natural Resources |
| CNR | Conseil National de la Résistance (French: National Council of Resistance) |
| CNR | Compagnie Nationale du Rhône (French engineering company) |
| CNR | College of New Rochelle |
| CNR | Carrier-To-Noise Ratio (fiber quality measuring) |
| CNR | Carrier to Noise Ratio |
| CNR | Charles Nelson Reilly (actor) |
| CNR | Center for Nursing Research (various schools) |
| CNR | Ceska Narodni Rada (Czech: Czech National Council) |
| CNR | Cisco Network Registrar |
| CNR | Chief of Naval Research |
| CNR | Conservatoire National de Région (French: National Regional Conservatory) |
| CNR | Combat Net Radio |
| CNR | Centre National de Ressources (French: National Resource Center) |
| CNR | China National Radio |
| CNR | Comité National Routier (French: National Road Committee) |
| CNR | Colour Noise Reduction |
| CNR | Channel Number |
| CNR | Communications Networking Riser |
| CNR | Complex Node Representation |
| CNR | Click and Run |
| CNR | Centre National de Référence (French: National Reference Center) |
| CNR | Clinical Nursing Research (journal) |
| CNR | Centre National de Rugby (French: National Rugby Center) |
| CNR | Cercle National du Recyclage (French: National Recycling Circle; est. 1985) |
| CNR | Communication Network Riser |
| CNR | Centro Nazionale delle Ricerche |
| CNR | Corporation for National Research |
| CNR | Centre for Narrative Research (UK) |
| CNR | Cops and Robbers (gaming clan) |
| CNR | Centre for Neuroscience Research |
| CNR | Consejo Nacional de Reconciliación (Spanish: National Reconciliation Council) |
| CNR | Communication & Networking Riser |
| CNR | Committee for Nuclear Responsibility (San Francisco, CA) |
| CNR | Communications / Network Riser |
| CNR | Center for Nutritional Research |
| CNR | Could Not Resist |
| CNR | Committee on Natural Resources |
| CNR | Centre for Neurodegeneration Research (King's College London; UK) |
| CNR | Center for Neurological Restoration (Cleveland Clinic) |
| CNR | Currency Non-Resident (financial account) |
| CNR | Composite Noise Rating |
| CNR | C-Type Noise Reduction (Dolby cassette technology) |
| CNR | Compagnie Normande de Réfrigération (French: Normandy Refrigeration Company; Guichainville, Normandy, France) |
| CNR | Cell Nucleus Replacement |
| CNR | Cercle des Nageurs Riomois (French swim club) |
| CNR | Center for Narcolepsy Research |
| CNR | Customer Not Ready |
| CNR | Computer and Network Repair (Georgia) |
| CNR | Centre for Neurotranslational Research (Canada) |
| CNR | Complex Node Representation (ATM Forum, PNNI SWG) |
| CNR | Clutter to Noise Ratio |
| CNR | Charterers Not Reported (shipping) |
| CNR | Complex Natural Resonance |
| CNR | Calibration Not Required |
| CNR | Can Not Reproduce |
| CNR | Customer Net Revenue |
| CNR | Center for Nonprofit Resources (Ohio) |
| CNR | Customized Network Routing |
| CNR | Carboxy Nitroso Rubber |
| CNR | Certificate of No Records |
| CNR | Composite Noise Ratio |
| CNR | Conventional Nuclear Weapons |
| CNR | Cross-Namespace Redirect (Wikimedia Foundation) |
| CNR | Critical Node Recognizer |