| Acronym | Definition |
|---|
| ADO | ActiveX Data Object (Microsoft) |
| ADO | Asian Development Outlook |
| ADO | Adenosine |
| ADO | Active Data Object |
| ADO | Australian Defence Organisation |
| ADO | American Darts Organization |
| ADO | Adult Dyslexia Organisation |
| ADO | Automotive Diesel Oil (refining industry) |
| ADO | Army Digitization Office (US Army) |
| ADO | Alles Door Oefening (soccer club) |
| ADO | Ampex Digital Optics (digital effects system by Ampex) |
| ADO | Army Direct Ordering |
| ADO | Agriculture Development Officer (India) |
| ADO | Additional Day Off |
| ADO | Auxiliary Disconnect Outlet |
| ADO | Air Defense Operations |
| ADO | Average Dipole Orientation |
| ADO | Aerodrome Office |
| ADO | Accumulated Day Off |
| ADO | Advanced Development Objective(s) |
| ADO | Associacao Desportiva Ovarense (soccer club) |
| ADO | Administrative Duty Officer |
| ADO | Accelerator Device Object |
| ADO | Associate Director of Operations |
| ADO | Authorized Day Off |
| ADO | Abstract Design Object |
| ADO | Assistant Duty Officer |
| ADO | Airport District Offices (FAA) |
| ADO | Aegis Depot Operations |
| ADO | Adaptive Solutions, Inc. (stock symbol) |
| ADO | Activity Distribution Office |
| ADO | Associated Disbursing Office |
| ADO | Automated Delivery Order |
| ADO | American Dancesport Organization |
| ADO | Army Development Office/Officer |
| ADO | Acquisition Development Office |
| ADO | Assistant Desk Officer (NYPD) |
| ADO | Address Only Mode Transfer (VME) |
| ADO | Alaska Disaster Office (Anchorage, AK) |
| ADO | Air Hokkaido International (airline) |
| ADO | Assistant Director of Operation |
| ADO | Axiodistoocclusal |
| ADO | Advanced Oxide |
| ADO | Active Directory Object (computing) |
| ADO | Appeal Deciding Officer |