Hikaru Utada , also known by the mononym Utada, is a Japanese singer, songwriter and producer. Utada is one of the most influential and best-selling musical artists in Japan.

Junko Utada , known primarily by the stage name Keiko Fuji was a Japanese enka singer and actress. She had success in Japan in the 1960s and 1970s with her ballad-type songs. She was married on-and-off with Utada Teruzane, and was the mother of Japanese pop singer Hikaru Utada.