| Abbreviation | Definition |
|---|---|
| NCL | National Charity League |
| NCL | National Civic League |
| NCL | National Consumers League |
| NCLC | National Consumer Law Center |
| NCLD | National Center for Learning Disabilities |
| NCLR | National Center for Lesbian Rights |
| NCLR | National Council of La Raza |
| NCM | Nazarene Compassionate Ministries |
| NCMAF | National Conference on Ministry to the Armed Forces |
| NCMEC | National Center for Missing and Exploited Children |
| NCMI | Nazarene Compassionate Ministries, Inc. |
| NCN | Nonprofit Centers Network |
| NCNE | National Center for Neighborhood Enterprise |
| NCNE | National Center on Nonprofit Enterprise |
| NCNW | National Conference of Negro Women |
| NCNW | National Council of Negro Women |
| NCOA | National Council On the Aging |
| NCOD | National Center On Deafness |
| NCP | Natural Child Project |
| NCP | Northwest Community Program |