NAIF
| Acronym | Definition |
|---|---|
| NAIF | Navigation Ancillary Information Facility (US NASA) |
| NAIF | North American Imams Federation (Islamic organization; est. 2002; various locations) |
| NAIF | Northern Australia Irrigation Futures (est. 2003) |
| NAIF | National Association of Investment Fiduciaries (advocacy group) |