Gulshan Kumar Dua, was an Indian film and music producer and businessman who was the founder of the Super Cassettes Industries Limited (T-Series) music label in the Bollywood industry. After founding T-Series in 1983, Dua established it as a leading record label in the 1990s.

Super Cassettes Industries Private Limited, doing business as T-Series, is an Indian music record label and film production company founded by Gulshan Kumar on 11 July 1983. It is primarily known for Hindi film soundtracks and Indi-pop music. As of 2014, T-Series is India's largest music record label, with up to a 35% share of the Indian music market, followed by Sony Music India and Zee Music. As of April 2024, T-Series also owns and operates the most-viewed and the most-subscribed YouTube channel, with over 263 million subscribers and 252 billion views. While best known as a music label, T-Series has also had some moderate success as a film production company.