Surname ดุลย (Dunya 
, ดุลย 
) , all over the world, is quite a rare last name. The surname ดุลย is habitual in Western Asia, particularly Azerbaijan, where it is quite a rare surname, Iraq, and Lebanon. In absolute terms, this name is the most popular in Iraq, Malaysia, and Nigeria. More frequently, ดุลย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dunya | Azerbaijan, Afghanistan, Malaysia, Iraq, Pakistan |
| ดุลย | Thailand |