NIAF
| Acronym | Definition |
|---|---|
| NIAF | National Italian American Foundation |
| NIAF | Netherlands Institute for Animation Film (Tilburg, Netherlands) |
| NIAF | Northern Ireland Athletics Federation (UK) |
| NIAF | National Illness Assistance Fund (India) |
| NIAF | Neo-Indie Arts Festival (now Greater Washington Indie Arts Festival; Washington, DC) |
| NIAF | Newcastle Independence Assessment Form (neurology; University of Newcastle; UK) |