| Acronym | Definition |
|---|
| NASS | National Agricultural Statistics Service |
| NASS | National Association of Secretaries of State |
| NASS | North American Spine Society |
| NASS | National Asylum Support Service (UK) |
| NASS | Nas Solution |
| NASS | National Assembly (UK) |
| NASS | National Automotive Sampling System (US DOT) |
| NASS | National Air and Space Society |
| NASS | National Ankylosing Spondylitis Society |
| NASS | National Accident Sampling System |
| NASS | North American Sundial Society |
| NASS | Network Attachment Subsystem |
| NASS | Naval Academy Summer Seminar (summer admissions program for prospective students) |
| NASS | National Alliance for Safe Schools |
| NASS | North American Strongman Society |
| NASS | Naval Air Signal School (US Navy) |
| NASS | New Age Security Solutions |
| NASS | Nebraska Agricultural Statistics Service |
| NASS | National Action Sports Show (UK) |
| NASS | Naval Academy Sailing Squadron |
| NASS | North American Shagya-Arabian Society |
| NASS | Ngee Ann Secondary School (Singapore) |
| NASS | North American Speed Society |
| NASS | Numerical Aerodynamics Simulation System |
| NASS | Network Attached Storage Systems |
| NASS | National Association for Safe Schools |