| Abbreviation | Definition |
|---|---|
| NCF | National Conservation Foundation |
| NCF | Noordhoff Craniofacial Foundation |
| NCFADS | North Carolina Foundation for Alcohol and Drug Studies |
| NCFADS | North Carolina Foundation for Alcohol Drug Studies |
| NCLF | Nederland Community Library Foundation |
| NCOF | National Childhood Obesity Foundation |
| NCPF | National CyberCrime Prevention Foundation |
| NCPF | North Carolina Psychoanalytic Foundation |
| NCRF | National Court Reporters Foundation |
| NCUF | National Credit Union Foundation |
| NDCF | Nargis Dutt Cancer Foundation |
| NDPF | Netherlands Drug Policy Foundation |
| NDRF | National Disaster Relief Foundation |
| NDRF | National Dysautonomia Research Foundation |
| NEEF | National Education and Employment Foundation |
| NEF | NAWIC Education Foundation |
| NEF | New Economics Foundation |
| NEF | New Entrepreneurs Foundation |
| NEF | Northside Education Foundation |
| NEFA | New England Foundation for the Arts |