AET

AET may refer to:

• Assistant English Teacher in Japanese schools.
• Actual Evapotranspiration
• Administration for Technical Investigations (Administration des enquêtes techniques)
• AET (company), the global shipping company formerly known as American Eagle Tankers.
• AET, an abbreviation used in sport, used to denote the score 'After Extra Time'
• Affective Events Theory, a model developed by organizational behaviorists to identify how emotions and moods influence job performance and satisfaction.
• American Educational Trust
• Australian Eastern Time, a time zone in Australia
• Alpha-Ethyltryptamine, a psychoactive drug belonging to the tryptamine family
• Allakaket Airport in Alaska (IATA Code: AET)
• Application Entity Title in DICOM

aet may refer to:

• "after extra time", to indicate a procedure used in sports when a match is tied at the end of regulation time has taken place to determine the winner.