Cognomen اولان (Ulan 
, اولان 
) , across the world, is quite a common last name. The last name اولان is habitual in Philippines, where it is quite a rare surname, Indonesia, and Finland. Measured by absolute frequency, the name is most common in Indonesia, Philippines, and the United States. Likewise, اولان is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ulan | Philippines, Uzbekistan, Poland, India, Indonesia |
| اولان | Iraq, Palestinian Territory |