Surname كايا (Kaya 
, Kya 
, Caia 
) , in the world, is a prevalent family name. The last name كايا is habitual in Turkey, where it is a prevalent surname, the Democratic Republic of the Congo, where it is a common surname, and Cyprus, where it is quite a common surname (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Turkey, the Democratic Republic of the Congo, and India. Very seldom, كايا is the forename as well as the last name.