| 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) |