| Abbreviation | Definition |
|---|---|
| A&T | Ayo & Teo |
| AA | Acronym Attic |
| AAID | Android Advertising IDentification |
| AANZE | Aan Zee |
| AAWP | American Academy of Wedding Professionals |
| ABBAB | Always Be Berating And Belittling |
| ABCD | Asian Best Couple Dating |
| AC | abbreviations.com |
| ACC | Adobe Creative Cloud |
| ACRF | The Adoption Community Resource Foundation |
| ACURA | Another Car Using Rice Additives |
| ACUV | acuvstrategy.com |
| AEAA | Auto Electronic Accessories Australasia |
| AFD | Alt.Fan.Dragons |
| AFF | AllFullForms.info |
| AFF | Asian Fan Fiction |
| AFH | Alt.Fan.Hanson |
| AFOE | Alternate Future of Europe |
| AFP | Arena Fan Pages |
| AFR | Alt.Fairs.Renaissance |