| Acronym | Definition |
|---|
| NTD | NASA (National Aeronautics and Space Administration) Test Director |
| NTD | N-Terminal Domain (proteins) |
| NTD | Notice and Takedown |
| NTD | Neural Tube Defect (neurology) |
| NTD | Nothing to Declare |
| NTD | Neglected Tropical Diseases (World Health Organization) |
| NTD | Nothing To Do |
| NTD | National Transit Database |
| NTD | Negative Tone Development (immersion lithography) |
| NTD | New Taiwan Dollar |
| NTD | New Tang Dynasty TV |
| NTD | National Trails Day |
| NTD | National Theater of the Deaf |
| NTD | Neutron Transmutation Doping |
| NTD | Northern Telephone and Data (Oshkosh, WI) |
| NTD | New Theory of Disuse (psychology) |
| NTD | Norwalk Transit District |
| NTD | Nth to Default (Note) |
| NTD | Neurotransmitter Disorder |
| NTD | New Technologies Department (Datago, Ltd.; Israel) |
| NTD | Non Transmissable Disease |
| NTD | National Transportation Database |
| NTD | National Tartan Day |
| NTD | Neutral Tube Defect |
| NTD | Noticiero Televisa Deportes (México) |
| NTD | Non Tower Detergent |
| NTD | Notice of Deposition |
| NTD | Navy Telecommunications Directive (US Navy) |
| NTD | Note to Draft (denotes comments not intended for inclusion in legal document) |
| NTD | National Tax Database (UK) |
| NTD | Note to Director |
| NTD | Nicholas Tarr Designs |