Cognomen Diang (Diang 
, เดียง 
, เดี้ยง) , worldwide, is quite a rare surname. The last name Diang is habitual in Senegal, where it is quite a rare surname, Cameroon, and Malaysia, where it is a rare surname. In absolute terms, this name is the most popular in Philippines, Cameroon, and Malaysia. Also, Diang is the forename as well as the last name.