| Abbreviation | Definition |
|---|---|
| NAEYC | National Association For Education Of Young Children |
| NAF | National Abortion Federation |
| NAF | National Academy Foundation |
| NAF | National AIDS Forum |
| NAF | National AIDS Fund |
| NAF | National Ataxia Foundation |
| NAF | Naval Aviation Foundation |
| NAFCA | North American Family Campers Association |
| NAFD | National Association For the Deaf |
| NAFD | North American Food Drive |
| NAFI | National Association of Fraud Investigators |
| NAFI | National Ataxia Foundation, Inc. |
| NAFI | National Ataxia Foundation, Incorporated |
| NAFL | National Association of Freight and Logistics |
| NAFWS | Native American Fish and Wildlife Society |
| NAHA | North American Hedgehog Association |
| NAHC | National Association of Home Builders |
| NAHC | National Association of Home Care |
| NAHC | National Association of Housing Cooperatives |
| NAHD | Noble Action Holistic Development (Ethiopian) |