Nesa
- NSW Education Standards Authority
- National Eagle Scout Association
- National Electronic Sectional Appendix
- National Electronic Security Authority
- National Emergency Supply Agency
- Near East South Asia Center for Strategic Studies
- Nesa (Kültepe)
- Nesa (butterfly)
- Nesa Rural District
- Nesa, Alborz
- Nesa, Gilan
- Nesa, Hormozgan
- Nesa, Qazvin
- Nesa-e Olya
- Nesa-ye Olya
- Nesa-ye Sofla
- New England Sociological Association
- Nisa (disambiguation)
- Nisa, Turkmenistan
- Nysa (disambiguation)
- Nyssa (disambiguation)
- Zollernbahn Railway Society