| Abbreviation | Definition |
|---|---|
| NCCN | National Comprehensive Cancer Network |
| NCCNHR | National Citizens' Coalition for Nursing Home Reform |
| NCCRA | National Colorectal Cancer Research Alliance |
| NCCS | National Center for Charitable Statistics |
| NCCS | National Children's Cancer Society |
| NCCS | National Coalition For Cancer Survivorship |
| NCCT | National Council of Canadian Tamils |
| NCCT | Native Canadian Centre of Toronto |
| NCCW | National Council for Citizens Welfare |
| NCCW | National Council for Conservation of Wildlife |
| NCDA | National Community Development Association |
| NCDBA | North Carolina Deaf Blind Association |
| NCDBW | National Clearinghouse for he Defense of Battered Women |
| NCDHA | North Carolina Dental Hygiene Association |
| NCDHR | National Campaign on Dalit Human Rights |
| NCDI | National Community Development Institute |
| NCEHC | National Center for Ethics in Health Care |
| NCF | Nathan Cummings Foundation |
| NCF | National Center for Fathering |
| NCF | Nature Conservation Foundation |