| Acronym | Definition |
|---|
| NSG➣Nuclear Suppliers Group |
| NSG➣Newborn Screening and Genetics (Association of Public Health Laboratories) |
| NSG➣National School of Government (UK) |
| NSG➣Never Say Good Bye (song) |
| NSG➣National Security Group (Department of Justice, Canada) |
| NSG➣Nippon Sheet Glass (Japan) |
| NSG➣National Security Guards (India) |
| NSG➣Naturschutzgebiet (German: Nature Reserve) |
| NSG➣Network Services Group (various locations) |
| NSG➣No Sleep Gang (rap group) |
| NSG➣Neurosurgeon |
| NSG➣Network Services Gateway (various companies) |
| NSG➣Naval Security Group |
| NSG➣National System for Geospatial-Intelligence |
| NSG➣National Stakeholder Group |
| NSG➣Northbridge Services Group (Lexington, kY) |
| NSG➣Network Support Group |
| NSG➣National Steering Group (UK) |
| NSG➣National Senior Games |
| NSG➣National Support Group |
| NSG➣National Seminars Group |
| NSG➣Nacho Speed Garage (Honda) |
| NSG➣New Socialist Group (Canada) |
| NSG➣Node Steering Group |
| NSG➣No Sphere Grid (gaming) |
| NSG➣N-Substituted Glycine |
| NSG➣Nelson Speleo Group (caving club in New Zealand) |
| NSG➣Naui Services Group, Inc |
| NSG➣Never Stop Grinding |
| NSG➣Network Sub-Group |
| NSG➣Notice Support Group |