TEI

Tei may refer to:


 * Sandister Tei, Ghanaian journalist and Wikimedian
 * Tei (singer) (born 1983), Korean pop singer
 * Tei, Bucharest, a neighborhood in Bucharest, Romania
 * Tellurium monoiodide, a chemical compound with the formula TeI
 * Towa Tei, an artist, record producer and DJ (b. 1965)

TEI may refer to:


 * Tarlac Electric
 * Text Encoding Initiative, a consortium that develops standards for digital texts
 * Technological Educational Institute, a type of tertiary education institute in Greece
 * Terminal Endpoint Identifier (TEI), together with Service Access Point Identifier (SAPI) the unique identification of terminal equipment in the ISDN DSS1 standard
 * Tertiary Education Institution in New Zealand
 * Tezu Airport in India (IATA code)
 * Total Economic Impact, a financial metric (see Application Portfolio Management)
 * Trans Earth Injection, the procedure that a spacecraft performs to get back into the Earth's gravitational influence
 * Triethylindium, a chemical compound
 * Tusaş Engine Industries, a Turkish aircraft engine manufacturer