| NCSD | National Cancer Survivors Day 
| Others |
| NCSD | National Central Securities Depositories
| Others |
| NCSD | National Centre for Sustainable Development
| Others |
| NCSD | National Coalition of STD Directors
| Others |
| NCSD | National Commission for Sustainable Development
| Others |
| NCSD | National Council of Social Development
| Others |
| NCSD | National Cyber Security Division
| Others |
| NCSD | Natrona County School District
| Others |
| NCSD | Nevada City School District
| Others |
| NCSD | Nipomo Community Services District
| Others |
| NCSD | North Carolina School for the Deaf
| Others |
| NCSD | North Clackamas School District
| Others |
| NCSD | Northeast Consortium for Staff Development
| Others |
| NCSD | Northern Cambria School District
| Others |
| NCSD | Norwich City School District
| Others |
| NCSD | Nuclear Criticality Safety Division
| Others |