| Acronym | Definition |
|---|
| NCTD➣North County Transit District |
| NCTD➣National Centre for Tactile Diagrams (UK) |
| NCTD➣National Center for Teachers' Development (Ministry of Education, Culture, Sports, Science and Technology of Japan) |
| NCTD➣North San Diego County Transit Development Board |
| NCTD➣National Capital Therapy Dogs, Inc. |
| NCTD➣National Centre for Textile Design (India) |
| NCTD➣Networking and Computing Technologies Division (DOE) |