AET may refer to:
Academies Enterprise Trust, in the UK Actual Evapotranspiration, in climatology Administration for Technical Investigations (Administration des enquêtes techniques) Aerobic exercise training AET (company), a shipping company formerly known as American Eagle Tankers Aet (given name), an Estonian feminine given name Affective Events Theory, a model developed by organizational behaviorists to identify how emotions and moods influence job performance and satisfaction "After extra time", in sports, the score after overtime has finished All-electronic tolling Allakaket Airport in Alaska, US (IATA airport code AET) α-Ethyltryptamine, a psychoactive drug belonging to the tryptamine family American Educational Trust, a non-profit foundation Application Entity Title, in the DICOM medical imaging standard Assistant English Teacher, also called an Assistant Language Teacher Australian Eastern Time, a time zone in Australia Award in Education and Training, in UK education S-(2-aminoethyl)isothiuronium bromide hydrobromide