Surname Tatsuhiko (Tatsuhiko 
, タツヒコ , Тацухико 
) , in the entire world, is quite a common family name. The cognomen Tatsuhiko is characteristic of Eastern Asia, particularly Japan, where it is quite a rare surname, and China, where it is an extremely rare surname. Much less frequently, Tatsuhiko is the forename as well as the last name.