NSSG
| Acronym | Definition |
|---|---|
| NSSG | North Shore Surf Girls (Hawaii) |
| NSSG | National Statistical Service of Greece |
| NSSG | National Security Study Group (US DoD) |
| NSSG | Nuclear Safety and Security Group (Group of Eight; Kananaskis Summit) |
| NSSG | Network Site Specific Group (UK) |
| NSSG | NATO Standardization Staff Group |
| NSSG | Navy System Support Group (US Navy) |
| NSSG | National Self-Storage Group (Marcus & Millichap Real Estate Investment Services; Encino, CA) |
| NSSG | Noonan Syndrome Support Group, Inc. (est. 1996) |