Cognomen Chanfong (จันทร์ฟอง 
, Chanfong 
, จันฟอง ) , globally, is a rare last name. The cognomen Chanfong is habitual in Laos, where it is quite a rare surname, Thailand, where it is a rare surname, and France, where it is a very rare surname. More frequently, Chanfong is the forename as well as the last name.