Cognomen Hideki (Hideki 
, ヒデキ , Хидеки 
) , across the world, is a common family name. The family name Hideki is characteristic of Japan, where it is quite a common surname, Singapore, where it is a rare surname, and Taiwan. Measured by absolute frequency, the name is most common in Japan, China, and Indonesia. Very seldom, Hideki is the forename as well as the last name.