Cognomen Дахлан (Dahlan 
, Дахлан 
) , all over the world, is a common last name. The surname Дахлан is habitual in South-eastern Asia, particularly Malaysia, where it is quite a common surname, Brunei, and Indonesia. Measured by absolute frequency, it is the most numerous in Indonesia, Malaysia, and Saudi Arabia. Much less frequently, Дахлан is the forename as well as the last name.