English abbreviations from ao to aoc
- AO (Area of operations)
- AO&M (Administration, Operation, and Maintenance)
- AO2CA (Airline Oxygen Council of America)
- AOA (American Optometric Association)
- AOAP (Add On Armor Panel)
- AOB (Annanberg Airport)
- AOBC (Armor Office Basic Course)
- AOBEM (American Osteopathic Board of Emergency Medicine)
- AOC (Aeronautical Operational Control)