Surname دوان (Doan 
, Duan , Dejuan 
, and others...) , in the entire world, is a widespread last name. The surname دوان is characteristic of Cayman Islands, where it is quite a common surname, China, and British Virgin Islands (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in China, Vietnam, and the United States. Very seldom, دوان is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Doan, Duan | Vietnam, United States, India, Indonesia, China |
| Dejuan | Canada, France, United States, Malaysia, China |
| Dwan | United States, India, Indonesia, Malaysia, China |
| دوان | Iran, Morocco, Iraq, Sudan, Palestinian Territory |