Globally, ดุลย์เดช (ดุลย์เดช 
) is a very rare boy's first name. The first name ดุลย์เดช is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare boy's name. Very seldom, ดุลย์เดช is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| ดุลย์เดช | Thailand |
สุขสม, ไชยบุญทัน, and ทรัพย์สมาน