- Central European Time
- Central England Temperature a set of monthly records dating back to the seventeenth century
- Cetus (constellation) (Cet)
- College English Test , a national examination in China
- College Of Engineering, Trivandrum , in Kerala, India.
- FV180 Combat Engineer Tractor
- Comcast Entertainment Television , a Denver, Colorado station
- Common External Tariff
- Computer Engineering Technology , an academic degree
- Common Entrance Test , for prospective engineering or medicine students in Karnataka, India
- Critical Experiment Tank, a defunct experimental Nuclear Reactor at the Idaho National Laboratory
- WCET-TV , a PBS station serving Cincinnati, Ohio
- Continuous Education and Training, for practising professionals after qualification
- Certified Engineering Technologist or Certified Engineering Technician. A professional accreditation used by the provincial constituent members of the Canadian Council of Technicians and Technologists ( CCTT ). See Technologist .
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