| Acronym | Definition |
|---|
| A2A➣Access to Archives (UK) |
| A2A➣Application to Application |
| A2A➣Ashes to Ashes (TV series) |
| A2A➣Account-to-Account (banking) |
| A2A➣Ask to Answer |
| A2A➣Any to Any |
| A2A➣Administration to Administration |
| A2A➣Athens-to-Atlanta (in-line skating event; Georgia) |
| A2A➣Air-To-Air (weapon) |
| A2A➣Administration-to-Administration |
| A2A➣Airline to Airline |