| Abbreviation | Definition |
|---|---|
| AODT | Association Of Dance Teachers |
| AOEC | Association of Occupational and Environmental Clinics |
| AOEE | Association of Electronic Engineers |
| AOF | Ancient Order of Freesmiths |
| AOF | Association of Oregon Faculties |
| AOFA | Association of First Aiders |
| AOFA | Association Of Former Ambassadors |
| AOGC | Association Of General Contractors |
| AOGE | Association Of Global Educators |
| AOGM | Association of Obstetricians and Gynaecologists of Malawi |
| AOGM | Association of Obstetrics & Gynecology of Macau |
| AOI | Association Of Illustrators |
| AOI | Association of Optometrists Ireland |
| AOI | Association of Otolaryngologists of India |
| AOIA | American Osteopathic Information Association |
| AOIA | Arizona Optics Industry Association |
| AOIA | Association of Online Insurance Agents |
| AOIC | Association of Independent Celebrants |
| AOIC | Association of Irish Choirs |
| AOIFA | Association of Irish Floral Artists |