Cognomen Adun (Adun 
, อดุล , อาดูร ) , globally, is quite a rare family name. The surname Adun is habitual in Nigeria, where it is quite a rare surname, Indonesia, where it is a rare surname, and Saudi Arabia. In absolute terms, it is the most numerous in Nigeria, Indonesia, and Thailand. More frequently, Adun is the forename as well as the last name.