Surname 斯基 (Siji 
, Siki 
, 斯基 ) , in the entire world, is a common cognomen. The family name 斯基 is characteristic of Papua New Guinea, where it is quite a rare surname, the Democratic Republic of the Congo, and Serbia. Not in comparison with a country's population, it is commonest in Indonesia, the Democratic Republic of the Congo, and India. More frequently, 斯基 is the forename as well as the last name.