Cognomen ひでき (Hideki 
, ひでき) , around the globe, is quite a rare last name. The surname ひでき is habitual in Japan, where it is quite a rare surname, Singapore, where it is a rare surname, and Taiwan. Measured by absolute frequency, it is commonest in Japan, China, and Indonesia. Likewise, ひでき is the forename as well as the last name.