Cognomen Iyok (Iyok 
) , globally, is a rare family name. The cognomen Iyok is habitual in Cameroon, where it is a rare surname, Indonesia, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Indonesia, Cameroon, and the United States. Also, Iyok is the forename as well as the last name.