English abbreviations from at to atacc
- AT (Auto Throttle)
- A-T (Ataxia-telangiectasia)
- AT% (Atomic Percent)
- @ (at)
- AT/FP (Anti-Terrorism/Force Protection)
- AT&T (American Telephone and Telegraph (U.S. company, also known as "Ma Bell"))
- ATA (Comandante FAP German Arias Grazziani Airport)
- ATAAC (Archives of The Association of American Cultures)
- ATAC (Air Transportable Acoustic Communications)
- ATACC (Advanced Tactical Air Command Center)