Organisations
* Taipei Economic and Cultural Representative Office, a Taiwan representative office alternative to an embassy * TECO Maritime, an international producer and supplier of cleaning systems for ships * TECO Electric and Machinery, a Taiwanese company in electric motor, electric appliances and other businesses worldwide * TECO Energy, an American electrical power company * Technical Education Center Osceola, a secondary school in unincorporated Osceola County, Florida, US * Telecooperation Office, a German research group in the field of pervasive Computing at the Karlsruhe Institute of TechnologyOther uses
* TECO (text editor) ("Text Editor and Corrector", originally ''Tape Editor and Corrector''), an early computer text editor * TECO Line Streetcar, a streetcar line in Tampa, Florida, US * Teco pottery, produced by American Terra Cotta Tile and Ceramic Company *