Family name ดวัน (Dawan 
, ดวัน ) , around the globe, is quite a common surname. The cognomen ดวัน is habitual in Qatar, where it is quite a rare surname, Kuwait, and Malaysia. Not in comparison with a country's population, it is the most numerous in India, Bangladesh, and Indonesia. Also, ดวัน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dawan | Iraq, India, Thailand, Bangladesh, Indonesia |
| ดวัน | Thailand |