NAISA
| Acronym | Definition |
|---|---|
| NAISA | New Adventures in Sound Art (Toronto, Canada) |
| NAISA | National Aquatic Invasive Species Act |
| NAISA | North American Institute for Study Abroad (Danville, PA) |
| NAISA | Nacional Agro Industrial Sociedad Anónima (Spanish: National Agro Industrial Limited Company; Guatemala) |