| Acronym | Definition |
|---|
| NU | University of Nebraska |
| NU | Northeast Utilities |
| NU | National University (various worldwide) |
| NU | Niue (The Country of Niue) |
| NU | Nicaragua |
| NU | Northwestern University (Evanston, IL, USA) |
| NU | Nunavut (Nunavut, Canada) |
| NU | Northeastern University (Boston, MA, USA) |
| NU | Niagara University (Niagara County, New York, USA) |
| NU | Newcastle United |
| NU | Next Up |
| NU | Nations Unies (French: United Nations) |
| NU | Nations Unies (United Nations) |
| NU | Naresuan University (Thailand) |
| NU | Naciones Unidas (Spanish: United Nations) |
| NU | Nações Unidas (Portuguese: United Nations) |
| NU | Northwood University |
| NU | Norton Utilities |
| NU | Nixon University (online university) |
| NU | Nahdlatul Ulama (Indonesia Islam organization) |
| NU | National Underwriter (Insurance Magazine) |
| NU | Name Unknown |
| NU | Nazioni Unite (Italian: United Nations) |
| NU | Niue Island (ISO country code) |
| NU | Nusselt Number (ratio of convective to conductive properties) |
| NU | Nagoya University (Japan) |
| NU | Nuoro, Sardegna (Italian province) |
| NU | Non-Uniformity |
| NU | Non-Ultra (Nvidia) |
| NU | Natural Uranium |
| NU | New Urbanist (architecture) |
| NU | Nova University |
| NU | Neuropathic Ulcer |
| NU | Nile University (Egypt) |
| NU | Number Unobtainable (telecommunications) |
| NU | Number Unobtainable |
| NU | Nikki-Universal Co., Ltd. (Japan) |
| NU | Neighborhood Unit |
| NU | NATO Unclassified |
| NU | NationsUniversity (online university) |
| NU | Normalized Unit |
| NU | Non Upset (thread end finish) |
| NU | Nationality Undetermined |