Daiko Nagato (長戸 大幸, Nagato Daikō, born 6 April 1948) is a Japanese musical producer, musical arranger, writer and composer. He's more known as a founder of music company Being Inc., which provided million seller hits during the 1990s and with his music company provided more than 80 theme songs for anime television series Detective Conan. He was the charge recording producer for the following artist such as Boøwy, Loudness, TUBE, B'z, ZARD, WANDS, Maki Ohguro, DEEN, T-BOLAN, Mai Kuraki, Garnet Crow and Rina Aiuchi.