AX or Ax may stand for:

AX

• Accumulator eXtended (x86 processor register in computing)
• Agility Excellent (AKC)
• Åland Islands (2-letter ISO country code)
• Alpha Chi Omega
• American Express
• Amman Exchange
• Anime Expo
• Architecture eXtended (Japanese computing architecture)
• Armani Exchange
• Atlantic Coast Line Railroad
• Autocross
• Automatic transmission
• Citroën AX
• F-Zero AX (video game)
• AX The Demon (furry artist and entrepreneur)
• Trans State Airlines IATA code

Ax

• Ax, a 87th Precinct story written in 1964 by Ed McBain (Evan Hunter)
• Ax, a WWE World Tag-Team Champion professional wrestler
• axe, alternative spelling
• Aximili-Esgarrouth-Isthill's nickname, a fictional Animorphs character Ax
• Emanuel Ax, a modern concert pianist
• A special forces group under the command of Cardinal Catherina in Trinity Blood
• A shortening of "ask" in Ebonics.
• A euphemism for layoffs.

See also

• Axe
• .ax (the reserved ccTLD for the Åland Islands).

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