| Acronym | Definition |
|---|
| AOO | Apache Openoffice (software) |
| AOO | Area of Occupancy (macroecology) |
| AOO | Assumption of Operations |
| AOO | Annals of Oncology (Oxford University Press) |
| AOO | Acknowledgement of Order |
| AOO | Assistant Operations Officer (various organizations) |
| AOO | Area of Opportunity (various organizations) |
| AOO | Adobe Open Options |
| AOO | Accelerated Osteogenic Orthodontics (dental procedure) |
| AOO | Attack of Opportunity (Dungeons & Dragons game) |
| AOO | Adobe Open Options (licensing program; Adobe Systems Inc.) |
| AOO | Area Of Operations |
| AOO | Any One Occurrence |
| AOO | Army of One |
| AOO | Altoona / Martinsburg, PA, USA - Blair County (Airport Code) |
| AOO | Audience of One |
| AOO | Adjudant Onderofficier |
| AOO | Anticipated Operational Occurrence |
| AOO | Agents of Oblivion |
| AOO | Aviation Ordnance Officer |
| AOO | Angle of Orientation |
| AOO | American Oceanic Organization |
| AOO | Amphibious Operations Officer |
| AOO | Accounting Operations Office |
| AOO | Air Operations Order |
| AOO | Air Operations Officer |
| AOO | Attribute Oriented Operation |
| AOO | Analysis Objective Order |
| AOO | Area Operations Officer |
| AOO | Abel Oner Office (architectural firm) |