Tsunku (つんく?) often written as Tsunku♂ (つんく♂?), is a prolific Japanese record producer, songwriter, and vocalist.
He is best known for having two major roles in the Japanese music landscape: first as the lead singer of the popular rock group Sharam Q, and now as the producer, primary composer, lyricist and main studio backing vocalist for idol supergroup Morning Musume, in addition to Aya Matsuura and other associated artists under the Hello! Project banner, for whom he has written and produced vast majority of their chart-topping hits. He has also produced music for other Japanese artists, including Ayumi Hamasaki’s first number one single. His musical influences include The Beatles and Queen.