| Acronym | Meaning |
| ASD | Accelerator Systems Division (US Department of Energy) |
| ASD | Acquisition Support Division |
| ASD | Administrative Security Division (US DHS) |
| ASD | Advanced Ship Development |
| ASD | Advanced Supercomputing Division (NASA) |
| ASD | Advanced Systems Directorate |
| ASD | Advanced Systems Division |
| ASD | Aeronautical Systems Division |
| ASD | AeroSpace and Defence Industries Association of Europe |
| ASD | Agricultural Services & Development |
| ASD | Agricultural Statistics Division (various organizations) |
| ASD | Air Support Director |
| ASD | Air-worthiness Substantiation Document |
| ASD | Aircraft Situation Display |
| ASD | Aircraft Specific Data |
| ASD | Alternate Service Delivery (Canada) |
| ASD | Ammunition Supply Depot |
| ASD | Analysis and Support Division |
| ASD | Analytical Services Division (UK) |
| ASD | Anti-Swimmer Device |
| ASD | Application Services Division |
| ASD | Application Software Developer |
| ASD | Application System Developer |
| ASD | Applied Sciences Directorate (US NASA) |
| ASD | Approach Sight Distance (driving) |
| ASD | Architectural Services Department (Hong Kong) |
| ASD | Army Schools Department (British Army; UK) |
| ASD | Army Shipping Document |
| ASD | Assessment and Standards Division (EPA) |
| ASD | Assigned Software Developer |
| ASD | Assigned Systems Developer |
| ASD | Assignment Selection Data/Date |
| ASD | Assistant Secretary of Defense |
| ASD | Atmospheric Sciences Department |
| ASD | Atmospheric Sciences Division |
| ASD | Atomic Spectra Database (US NIST) |
| ASD | Audio Services Division (Federal Communications Commission) |
| ASD | Audit Services Department (various organizations) |
| ASD | Australian Signals Directorate (Australia) |
| ASD | Australian Suppliers Database |
| ASD | Automated System Demonstration |
| ASD | Average Sortie Duration |
| ASD | Aviation Service Date |
| ASD | Aviation Supply Depot |
| ASD | Aviation Systems Directorate |
| ASD | Avionics Systems Design |
| ASD | AWIS Software Development |