Het

Het or HET may refer to:

Science and technology

 * Hall-effect thruster, a type of ion thruster used for spacecraft propulsion
 * Heavy Equipment Transporter, a vehicle in the US Army's Heavy Equipment Transport System
 * Hobby–Eberly Telescope, an instrument at the University of Texas McDonald Observatory
 * Human enhancement Technologies, devices for enhancing the abilities of human beings
 * Heterozygote, a diploid organism with differing alleles at a genetic locus; see zygosity
 * Hexaethyl tetraphosphate, in chemistry
 * HET acid, alternate term for Chlorendic acid

Other uses

 * Hét, a village in Hungary
 * Het peoples, or their language
 * Heterosexuality, sexual attraction to the opposite sex
 * HighEnd Teen (2008–2017), a former Indonesian magazine
 * Historical Enquiries Team (2005–2014), a former unit of the Police Service of Northern Ireland
 * Holocaust Educational Trust, a British charity
 * HET, IATA code for Hohhot Baita International Airport, in Inner Mongolia, China
 * HET, former ticker symbol for Harrah's Entertainment, later renamed Caesars Entertainment Corporation, an American hotel and casino corporation
 * HET, initialism for Hoofdklasse, Eerste klasse, Tweede klasse, the three divisions of Football in the Netherlands
 * Heth, a letter of many Semitic alphabets
 * Cyrillic spelling of the Russian word for no, pronounced "Nyet"