| Abbreviation | Definition |
|---|---|
| ANS | Arise and Shine |
| ANT | A New Thing |
| ANW | Ain't No Way |
| ANYTM | Anytime |
| AO | All The Other |
| AO | Among Others |
| AO | Anarchy Online |
| AO | Another One |
| AOA | Announcement On Arrival |
| AOB | Address Old Business |
| AOC | Afterhours On Call |
| AOD | Achievement Of the Day |
| AOD | Away Of Desktop |
| AOF | A** On Face |
| AOG | Always On Game |
| AOK | Act Of Kindness |
| AOK | Alt Om K |
| AOL | All Our Love |
| AOL | Always Off Line |
| AOL | An Old Loafer |