Surname Кириакос (Kyriakos 
, Kiriakos , Koulis 
) , all over the world, is a common family name. The cognomen Кириакос is habitual in Greece, where it is a common surname, Cyprus, where it is quite a common surname, and North Macedonia, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Greece, the United States, and Serbia. Also, Кириакос is the forename as well as the last name.