List of acronyms begin with ‘A’.
- A&F- Always And Forever
- A3 - Anywhere, Any time, Any place
- AA - Alcoholics Anonymous,African-American,Automobile Association
- AAB - Average At Best
- AAF - Always and Forever
- AAK - Alive And Kicking
- AAMOF - As A Matter Of Fact
- AAP - Always A Pleasure
- AAR - At Any Rate
- AAWY - And Also With You
- AAYF - As Always Your Friend
- ABS - Absolutely
- ABT - About
- ABT2 - About To
- ACK - Disgust, frustration, Acknowledgement
- ADL - All Day Long
- ADN - Any Day Now
- AEAE - And Ever And Ever
- AEAP - As Early As Possible
- AFAIAC - As Far As I Am Concerned
- AFAIC - As Far As I'm Concerned
- AFAICS - As Far As I Can See
- AFAICT - As Far As I Can Tell
- AFAIK - As Far As I Know
- AFAIR - As Far As I Remember
- AFAP - As Far As Possible
- AFC - Away From Computer
- AFFA - Angels Forever, Forever Angels
- AFK - Away From Keyboard
- AFN - that's All For Now
- AFS - Always, Forever and Seriously
- AHEM - Throat clearing sound
- AIGF - All In Good Fun
- AIGHT - All right
- AIIC - As If I Care
- AIKRN - All I know right now
- AISB - As I Said before
- AISI - As I See it
- AIT - Alright
- AITE - Alright
- AIUI - As I Understand it
- AKA - Also Known As
- ALIHAL - At Least I Have A Life
- ALOL - Actually Laughing Out Loud
- ALOTBSOL - Always Look On The Bright Side Of Life
- AMA - Ask Me Anything, Against Medical Advice
- AMEX - American Express
- AMG - Ah My God
- AMIRITE - Am I Right?
- AML - All My Love
- AMZ - Amazing
- ANON - Unknown person
- ANY1 - Anyone
- AOB - Any Other Business
- AOE - Area Of Effect
- AOL - American Online
- AON - All Or Nothing, As Of Now
- AOT - As Opposed To, Among Other Things
- AOTA - All Of The Above
- APPROX - Approximately
- APU - As Per Usual
- ARK - Act of Random Kindness
- ASAIC - As Soon As I Can
- ASAP - As Soon as Possible
- ASAS - As soon as sensible
- ASL - Age, Sex, Location
- ASP - At Some Point
- ATB - All The Best
- ATEOTD - At The End Of The Day
- ATF - All Time Favorite
- ATK - Attack
- ATN - Any Time Now
- ATST - At The Same Time
- ATT - At This Time, All The Time
- ATTN - Attention
- ATV - All Terrain Vehicle
- ATWA - Air, Trees, Water, Animals, All The Way Alive
- ATYS - Anything You Say
- AUO - I don't know
- AWA - As Well As
- AWHFY - Are We Having Fun Yet
- AWNP - All Work, No Play
- AWSM - Awesome
- AWW - Any Which Way
- AYE - Yes
- AYFR - Are You For Real?
- AYKM - Are You Kidding Me?
- AYL - Are You Listening?
- AYO - Hey, You
- AYOR - At Your Own Risk
- AYS - Are You Serious?
- AYSOS - Are You Stupid Or Something?
- AYT - Are You There?
- AYW - As You Wish
- AZN - Asian
