| Abbreviation | Definition |
|---|---|
| NCSL | National Conference on Student Leadership |
| NCSM | National Conference for Sacred Music |
| NCSM | National Conference in Sales Management |
| NCSS | National Conference of State Societies |
| NCSY | National Conference of Synagogue Youth |
| NCTC | North Carolina Theatre Conference |
| NCTE | National Conference of Teacher Education |
| NCUE | National Conference on Urban Entomology |
| NCUR | National Conference on Undergraduate Research |
| NCVA | National Conference for Victims and Advocates |
| NCW | National Construction Week |
| NCWC | National Catholic Welfare Conference |
| NCYP | National Conference of Yeshiva Principals |
| NDBS | Nordic Digital Business Summit |
| NDC | International Symposium on New Directions in Computing |
| NDC | NENA Development Conference |
| NDC | Norwegian Developers Conference |
| NDEC | National Design Engineering Conference |
| NDLC | National Diversity in Libraries Conference |
| NDMS | National Direct Marketing Show |