TCL, tcl, or Tcl may refer to:
Businesses and organizations Businesses TCL Technology, a Chinese multinational electronics company TCL Electronics, its subsidiary Trade Centre Limited, a former Nova Scotia Crown corporation
Education
Theological College of Lanka, in Sri Lanka Trinity College London, an examination board People's Libraries Society (), a former educational society in the Prussian partition of Poland Transnational College of Lex, a language research institution based in Japan
Science and technology Computing The Common Link, a Swedish bulletin board system Transform, clipping, and lighting, a term used in computer graphics Tcl (programming language) (Tool Command Language) Tiny Core Linux, an operating system Transaction Control Language, a family of computer languages used by database systems to control transactions Think Class Library, a class library for Macintosh featured in THINK C
Other uses in science and technology TCL (GTPase), a G protein Tibial collateral ligament, in the knee Thermostatically controlled load
Transportation TCL (public transport), a public transport network in Lyon, France Tung Chung line, an MTR lines in Hong Kong Twin City Lines, a former public transit operator in Minneapolis, United States Tuscaloosa National Airport, United States (IATA code: TCL)
Other uses Texas Collegiate League, an American collegiate baseball league Taman language (Myanmar), an ISO 639-3 code
See also UEFA Champions League, also known as the Champions League