| Acronym | Definition |
|---|
| NRU➣Nauru (ISO Country code) |
| NRU➣National Research Universal (a 200 MWt reactor at AECL's Chalk River Laboratories) |
| NRU➣Nero Udf |
| NRU➣Not Recently Used |
| NRU➣Neighbourhood Renewal Unit (UK) |
| NRU➣Neutral Red Uptake |
| NRU➣Nederlandse Radio Unie |
| NRU➣Northeast Rugby Union |
| NRU➣Natural Rate of Unemployment (economics) |
| NRU➣Neurobiology Research Unit |
| NRU➣Nordic ReUnion (gaming group) |
| NRU➣Nitrogen Rejection Unit |
| NRU➣Nutritional Rehabilitation Unit |
| NRU➣Nutrition Rehabilitation Unit |
| NRU➣Newly Registered User (online forums) |
| NRU➣Northwest Requirements Utilities |
| NRU➣Nouveau Riche University (real estate) |
| NRU➣Negative Reinforcement University |
| NRU➣Niagara Rugby Union |
| NRU➣Nursing Research Unit |
| NRU➣Natural Resources Union (Canada) |
| NRU➣Novae Res Urbis |
| NRU➣Nuclear Radiation Unit |
| NRU➣Neuro-Rehabilitation Unit |
| NRU➣Network Repeater Unit |
| NRU➣Net Results Unlimited (Columbus, Ohio) |
| NRU➣Nutrient Response Units (land management) |