Cognomen Кіріакос (Kyriakos 
, Kiriakos , Qirjakos ) , across the world, is a common surname. The family name Кіріакос 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. Not in comparison with a country's population, this name is the most popular in Greece, the United States, and Serbia. Also, Кіріакос is the forename as well as the last name.