| Acronym | Definition |
|---|
| NRR➣Noise Reduction Rating |
| NRR➣Nuclear Reactor Regulation |
| NRR➣Net Reproduction Rate (fertility) |
| NRR➣Office of Nuclear Reactor Regulation |
| NRR➣Nederlandse Reanimatie Raad (Dutch: Dutch Resuscitation Council) |
| NRR➣National Research Register |
| NRR➣National Risk Register (UK) |
| NRR➣Net Run Rate (cricket) |
| NRR➣Nuclear Receptor Resource (project; Georgetown University; Washington, DC) |
| NRR➣Non Repudiation of Receipt (electronic commerce) |
| NRR➣North Reading Room (various locations) |
| NRR➣Nuclear Regulatory Research |
| NRR➣National Registration Regulations (Australia) |
| NRR➣Nutrition Research Reviews (journal) |
| NRR➣No Response Required |
| NRR➣Neuroretinal Rim (optic nerve) |
| NRR➣Nakanoshima Rapid Railway (Osaka, Japan) |
| NRR➣Nascom Reconfiguration Request |
| NRR➣National Recording Registry |
| NRR➣Navesink River Rowing (New Jersey) |
| NRR➣Non-Recurring Revenue |
| NRR➣Navy Research Requirements |
| NRR➣Nonunit Related Record |
| NRR➣Naval Research Requirement |
| NRR➣Nuclear Reactor Robot (Earthbound game) |
| NRR➣Network Requirements Review (acquisition process) |
| NRR➣Number of Reserved Registers |
| NRR➣No Rules Radio (Internet radio) |
| NRR➣Neurological Rehabilitation Resources (Thornton, CO) |
| NRR➣Nationwide Rip Ridaz (band) |