AAO
AAO stands for:
- Action analysis organization , a municipality founded by Otto Muehl in 1972
- Alarm and release order , the basic rules for alerting in the event of an alarm from authorities and organizations with security tasks
- General organizational structure, see organizational structure
- Acceptance order, when the budget is executed, an order to a cash register to accept payments, see payment order
- Anaco Airport (IATA airport code) in Venezuela
- American Association of Orthodontists (American Association of Orthodontists)
- American Association of Ophthalmologists (American Association of Ophthalmologists)
- Administrative Appeals Office
- Anglo-Australian Observatory
- Anodized aluminum oxide , a nano-structured material
a. a. O. (also: aaO ) stands for:
- at the place indicated , abbreviation instead of the full bibliographic information if the same text is quoted repeatedly, see ibid. # op. cit.
aao stands for:
- Saharan Arabic (ISO-639-3 code), dialect within Maghrebian Arabic along the Algerian border with Morocco
