| Acronym | Definition |
|---|
| NESA | National Eagle Scout Association (Boy Scouts of America) |
| NESA | Near East South Asia |
| NESA | North East Sea Angling (UK) |
| NESA | National Electronic Security Alliance |
| NESA | New European Surgical Academy (Berlin, Germany) |
| NESA | Near East South Asia Council of Overseas Schools |
| NESA | National Emergency Services Academy |
| NESA | Near-East South Asia Center for Strategic Studies (Washington, DC) |
| NESA | National Electric Sign Association (now International Sign Association) |
| NESA | National Energy Services Association |
| NESA | New Entity for Social Action (India) |
| NESA | National Even Start Association (San Diego, CA) |
| NESA | North East School of the Arts (San Antonio, Texas) |
| NESA | New England SAAB Association |
| NESA | North East San Antonio (Texas) |
| NESA | Northern Enhanced Sounding Array |
| NESA | Nigerian English Studies Association |
| NESA | Network Engineering and Security Analyst |
| NESA | Non-Equilibrium Simulated Annealing |
| NESA | Nose Equipment Support Assembly (LANTIRN Pod) |