Nisa
- An-Nisa
- Homalium
- Hyperdimension Neptunia
- InSecurity
- NISA (disambiguation)
- NISA Investment Advisors
- National Ice Skating Association
- National Independent Soccer Association
- National Intelligence Security Authority
- National Intelligence and Security Agency (Somalia)
- Nesa (disambiguation)
- Nicola Salerno
- Nippon Ichi Software
- Nippon individual savings account
- Nisa (Boeotia)
- Nisa (Lycia)
- Nisa (Megaris)
- Nisa (retailer)
- Nisa Aşgabat
- Nisa River (disambiguation)
- Nisa, Iran
- Nisa, Portugal
- Nisa, Turkmenistan
- Nise (disambiguation)
- Niza (disambiguation)
- North Imphal Sporting Association
- Nuclear and Industrial Safety Agency
- Nysa (disambiguation)
- Nyssa (disambiguation)
- Nısa