Surname Dulnuan (Dulnuan 
) , throughout the world, is a common cognomen. The surname Dulnuan is habitual in Philippines, where it is quite a rare surname, Laos, and United Arab Emirates, where it is a rare surname. Measured by absolute frequency, the name is most common in Philippines, Laos, and Saudi Arabia. Very seldom, Dulnuan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dulnuan | Philippines, United Arab Emirates, Laos, Saudi Arabia, Japan |