Cognomen Chaiyong (ชัยยงค์ 
, Chaiyong 
, ชัยยง , and others...) , around the globe, is quite a rare family name. The cognomen Chaiyong is habitual in Thailand, where it is quite a rare surname, Netherlands, where it is a very rare surname, and Germany, where it is an extremely rare surname. More frequently, Chaiyong is the forename as well as the last name.