Tetsuya Komuro (小室 哲哉, Komuro Tetsuya, born November 27, 1958) is a Japanese musician, songwriter and record producer. He is recognized as the most successful producer in Japanese music history and introduced contemporary electronic dance music to the Japanese mainstream. He was also a former owner of the disco Velfarre located in Roppongi, Tokyo.

In the Oricon singles chart of April 1996, he monopolized all the top 5 positions as the songwriter and producer, a world record. In 1995, he monopolized all top 3 positions of the copyright distribution rankings for the JASRAC Award, a record in Japan’s music history. At his peak as a record producer the artists he predominantly produced for came to be known as TK Family and at one time included Namie Amuro, hitomi, TRF, Tomomi Kahara and Ami Suzuki amongst others. As of 2008, records produced by him had sold more than 170 million copies, primarily in Japan. Total sales of the singles he has written exceed 42 million copies, making him the fourth best-selling lyricist in Japan.