AAAAA: Anonym Association Against Acronym Abuse

AAMOF: As A Matter Of Fact
ABFT: About Fucking Time
ACE: Ask Chief Everything
ACME: A Company that Makes Everything
ACRONYM: Abbreviated Coded Rendition Of Name Yielding Meaning
ACRONYM: Abbreviation by CROping Names that Yield Meaning
AE: Alternate Ego
AEG: Aus Erfahrung Gut
AEG: Auspacken, Einschalten, Garantiefall
AEG: Auspacken, Einschalten, Geht nicht
AF: Aunt Flo
AF: Aunt Flow

AFAIC: As Far As I'm Concerned
AFAICR: As Far As I Can Recall
AFAICT: As Far As I Can Tell

AFAIK: As Far As I Know

AFAIR: As Far As I Recall

AFAIR: As Far As I Remember

AFK: Away From Keyboard
AIS: As I Said

AIUI: As I Understand It
aka: also known as

ALAP: As Late As Possible
AMAP: as much as possible
ANAIS: Architecture Not Allowed In Source

ANFSCD: And Now For Something Completely Different
APL: A Perspicuous Language
ARMY: AF Rejected Me Yesterday
ARMY: Aren't Ready to be Marines Yet

ASAP: as soon as possible
ATM: A Thousand Miles
ATM: According to Me
ATM: Alternative To Money
ATM: Any Time Money
ATM: Anything That Moves
ATM: Around The Moon

ATM: at the moment
ATM: At the Movies
ATM: Ate Too Much