| Acronym | Definition |
|---|
| NAR | Nucleic Acids Research (journal) |
| NAR | National Association of REALTORS |
| NAR | National Association of Rocketry |
| NAR | New Apostolic Reformation (religious movement) |
| NAR | No Apparent Reason |
| NAR | National Alliance for Reconstruction (Trinidad and Tobago) |
| NAR | Nuclei Armati Rivoluzionari (Italian: Armed Revolutionary Nuclei; political group) |
| NAR | Not At Risk |
| NAR | Nationale Arbeidsraad (Dutch: National Labor Council; Brussels, Belgium) |
| NAR | North American Region |
| NAR | Narita International Airport (Tokyo) |
| NAR | Non-Advocate Review (NASA) |
| NAR | Naval Air Reserve |
| NAR | Net Amount At Risk (insurance) |
| NAR | Northern Alberta Railway |
| NAR | North American Route |
| NAR | Nurses Aid Registry (various locations) |
| NAR | Net as Received (coal) |
| NAR | Net After Royalty |
| NAR | Notice of Ammunition Reclassification |
| NAR | Name Authority Record (library catalogues) |
| NAR | No Assembly Required (Toronto band) |
| NAR | Non-Conventional Assisted Recovery (US DoD) |
| NAR | New-Access Router |
| NAR | Non Advocate Review |
| NAR | Nursing Assistant Registered |
| NAR | Nîmes Auto Rétro (French automobile club; Nîmes, France) |
| NAR | Nuclear Acoustic Resonance |
| NAR | No Adverse Reaction (medical charting) |
| NAR | National Advertising Revenue (UK television) |
| NAR | National Asbestos Registry |
| NAR | Numerical Analysis Research |
| NAR | Nuisance Alarm Ratio (security industry) |
| NAR | No Answer/Action Required |
| NAR | NAVOCEANO At-Sea Representative |
| NAR | Nomenclature Assignment Request |
| NAR | Next Address Register |
| NAR | Numbering, Addressing and Routing |
| NAR | Non-Available Reason |
| NAR | Needs Assessment Report (various organizations) |
| NAR | Numerical Adjusted Recapitulation |