RET or Ret may refer to: People Ret Chhon (born 1940), former Cambodian cyclist Ret Chol (died 2004), Southern Sudanese politician Ret Turner (1929–2016), American costume designer Engineering and computer science Renewable energy target Renewable energy technology Resolution enhancement technology, image processing technology used to manipulate dot characteristics ret, return from subroutine instruction in the x86 assembly language Registered Engineering Technologist, former certification in Alberta, Canada Rehabilitation engineering technologist, a role in rehabilitation engineering Ret, a measurement of the resistance to evaporative heat loss Transportation Retford railway station, by the British National Rail code RET Rotterdamse Elektrische Tram, the main public transport operator of Rotterdam, the Netherlands Røst Airport, Norway (IATA code) Biology RET proto-oncogene, a gene on human chromosome 10 Resonance energy transfer, a mechanism describing energy transfer between two chromophores Education Research Experiences for Teachers, a program of the National Science Foundation Russell Education Trust, a Multi-Academy free school Trust Other Rational Emotive Therapy, therapy now referred to as rational emotive behavior therapy Rational Expectations Theory, economic model-consistent expectations Resistance exercise training, a type of physical exercise Reticulum, a constellation abbreviated Ret Reț, a village in Blăjeni Commune, Hunedoara County, Romania