Columbia TriStar Television (CTT) was an American television studio that was active from 1994 to 2002. It was operated as the third name of the early television studio Screen Gems and the fourth name of Pioneer Telefilms, both part of Sony Pictures Entertainment and the third company to use the Columbia and TriStar names together (the first being Columbia TriStar Home Video, now Sony Pictures Home Entertainment and the second; Columbia TriStar International Television).