AAR

AAR is a three-letter acronym that may refer to:

Aviation

AAR Corporation, an American aviation engineering company
"Air-to-air refueling", also known as aerial refueling, the practice of transferring fuel from one aircraft to another during flight
AAR, IATA airport code for Aarhus Airport in Tirstrup, Denmark
AAR, ICAO airline code for Asiana Airlines of South Korea

Finance

Average accounting return, a capital budgeting investment rule

Medicine

Adam's apple reduction, a surgery
Antigen-antibody reaction

Military

After Action Review, a structured review process used by the U.S. military
After Action Report, military terminology

Music

The All-American Rejects, an American rock band

Organizations

All American Racers, a former Formula 1 and CART team
Allens Arthur Robinson, a law firm
American Academy of Religion, an association of academics who research or teach topics related to religion
Association for Automated Reasoning, a non-profit that seeks to advance the field of automated reasoning
Association of American Railroads, an industry trade group representing the freight railroads of North America

Television & Radio

Air America Radio, a domestic United States radio network

Other

Afar language (ISO 639 language identification code)
Ann Arbor Railroad, a railroad
"At any rate": see List of SMS abbreviations

Translation

The word "AAR" occurs as such in the following languages: English, German, Esperanto, Italian, Japanese, Slovenian, Swedish.

Translation(s) in other languages: French: Aar (homonymie), Dutch: Aar, Polish: Aar, Ripuarian: AAR (Watt ėßß datt?).