Cognomen Doeng (ดง 
, Doeng 
, เดิง) , across the world, is a rare family name. The cognomen Doeng is habitual in South-eastern Asia, particularly Malaysia, where it is a rare surname, Indonesia, and Thailand, where it is a very rare surname. In absolute terms, it is the most numerous in Indonesia, Malaysia, and China. Likewise, Doeng is the forename as well as the last name.