Family name 歌子 (Utako 
, 歌子 ) , across the world, is a very rare surname. The surname 歌子 is habitual in Japan, where it is a very rare surname, Thailand, and Chile, where it is an extremely rare surname. In absolute terms, the name is most common in Japan, China, and Thailand. Predominantly, 歌子 is the forename as well as the last name.