| Abbreviation | Definition |
|---|---|
| NAPTA | National Alliance of Public Transportation Advocates |
| NAWSA | National American Woman Suffrage Association |
| NAZBOL | National Bolshevism |
| NCC | Native Canadian Commission |
| NCDM | National Conference of Democratic Mayors |
| NCDP | North Carolina Democratic Party |
| NCDPP | National Christian Democrat Peasant Party |
| NCDPP | National Committee In Defense of Political Prisoners |
| NCFAW | National Committee for the Advancement of Women (Vietnam) |
| NCLU | Nebraska Civil Liberties Union |
| NCMP | Non constituency Member of Parliament |
| NCNP | National Congress for New Politics |
| NCP | National Conscience Party |
| NCPRI | National Campaign for People's Right to Information |
| NCSC | National Candidate Selection Committee |
| NCTE | National Center for Transgender Equality |
| ND | New Democrats |
| NDA | Non-Democratic Alliance |
| NDAK | New Democratic Army Kachin |
| NDAM | National Democratic Action Movement |