Cognomen シキ (Shiki 
, Siki 
, シキ ) , all around the world, is a common family name. The family name シキ is habitual in Japan, where it is quite a common surname, Papua New Guinea, where it is quite a rare surname, and the Democratic Republic of the Congo. In absolute terms, the name is most common in Japan, Indonesia, and the Democratic Republic of the Congo. Very seldom, シキ is the forename as well as the last name.