| Abbreviation | Definition |
|---|---|
| NASAIndia | National Association of Students of Architecture (India) |
| NASF | Net Assignable Square Footage |
| NATA | National Aptitude test for Architecture |
| NATA | National Aptitude Test in Architecture |
| NB | National Body |
| NBC | National Building Code |
| NBS | National Building Specification |
| NC | Neoclassical Component |
| NCARB | Certified by the National Council of Architectural Registration Boards |
| NCARB | National Certificate of Architecture Registration Boards |
| NCCE | National Council of Engineering Examiners |
| NCIDQ | National Council for Interior Design Qualification |
| ND | Narrow Door |
| ND | New Design |
| NDC | New Developers Conference |
| NDE | Nondestructive evaluation |
| NDE | Nondestructive examination |
| NDI | Nondestructive inspection |
| NDSA | National Defense Space Architecture |
| NDT | Nondestructive testing |