| Abbreviation | Definition |
|---|---|
| AOO | Algemeen Onderwijs Overleg |
| AOO | Algonquins of Ontario |
| AOO | Altrescoses Otrascosas Otherthings |
| AOO | AND of ORs |
| AOO | Anterior Overlap Opening |
| AOO | Anticipated Operational Occurrence |
| AOO | Any Other Objects |
| AOO | area of operations |
| AOO | Art Of Open |
| AOO | Art Orienté Objet |
| AOO | Assistant Operations Officer |
| AOO | Attack Of Opportunity |
| AOO | Attacks Of Opportunity |
| AOO | The Ancient Order Of Olympians |
| AOOG | Abandoned Orphaned Oil and Gas |
| AOOG | Amandla Offshore Oil Gas |
| AOOG | Assured Owner Occupied Guarantee |
| AOOO | Archive of Our Own |
| AOOP | Appellation of Origin The Philippines |
| AOP | Academic Orientation Program |