John Martin is chief executive officer of Turner Broadcasting System, Inc., a portfolio of news, entertainment and animation, young adult kids networks and businesses including CNN/U.S., CNN International, CNN.com and HLN; TBS, TNT, Turner Classic Movies and truTV; Cartoon Network and Adult Swim; and Turner Sports. Globally, Turner Broadcasting operates more than 130 channels in some 30 languages in more than 200 countries. Martin assumed executive leadership of Turner Broadcasting in January 2014.
Turner Broadcasting System, Inc. (often abbreviated Turner Broadcasting, TBS, Inc. or simply Turner) is an American media conglomerate and subsidiary of Time Warner, managing the collection of cable networksand properties initiated or acquired by Robert Edward "Ted" Turner starting during the 1970s. TBS, Inc. merged with Time Warner on October 10, 1996, and now operates as a semi-autonomous unit of Time Warner.