TEC or Tec may refer to:

Education

* Trichy Engineering College, in Konalai, Tamil Nadu, India * Costa Rica Institute of Technology * Tec, the Monterrey Institute of Technology and Higher Education * Tertiary Education Commission (disambiguation) * Texas Eastern Conference, an American junior college athletic conference

Governmental and public organizations

* Tasmanian Electoral Commission, Australia * The Episcopal Church * Telecommunication Engineering Centre, an Indian government agency * Tsunami Evaluation Coalition * Transatlantic Economic Council, directs economic cooperation between the US and the EU * Training and enterprise council, former public bodies in th UK * Topographic Engineering Center, former name of the US Army Geospatial Center * Treaty establishing the European Community * Transitional Executive Council, historic South African organization

Military

* TEC-3 or Technician third grade, United States Army rank * TEC-4 or Technician fourth grade, United States Army rank * TEC-5 or Technician fifth grade, United States Army rank * I.G. Brown Air National Guard Training and Education Center, Knoxville, Tennessee

People

* Nechama Tec, Professor Emerita at the University of Connecticut * Roland Tec, American writer and movie director

Science, engineering and medicine

* TEC (gene), a human gene * Thermoelectric cooler, devices employing the Peltier effect * Time error correction * Transient erythroblastopenia of childhood, a medical condition * Threshold Exceeds Condition, a value used in computer hard disk evaluation * Total electron content, a descriptive quantity of the Earth's ionosphere * TEC, a Russian abbreviation for thermal power stations in Russia and Soviet Union with combined heat and power plant

Other uses

* Tech (river) (), Pyrénées-Orientales ''département'', France * TEC-9, a semi-automatic pistol * Tec (album), ''Tec'' (album), a 2023 album by Lil Tecca * SV TEC, a Dutch association football club * Terik language (ISO 639-3 code: tec), spoken in Kenya * Toshiba TEC Corporation, a subsidiary of Toshiba * Tower en route control, a collection of air-traffic routes * TRACE Expert City, an office complex in Sri Lanka * Transport En Commun, a brand name of Belgian transport company ''Société Régionale Wallonne du Transport'' * Turkish Engine Center {{disambiguation, surname