Family name ดู่ (Du 
, Ddu 
, ดู่) , around the globe, is a prevalent cognomen. The surname ดู่ is habitual in British Virgin Islands, where it is a common surname, Cayman Islands, and Bermuda (explore the name in all countries). In absolute terms, this name is the most popular in China, Myanmar, and the United States. Very seldom, ดู่ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Du | China, India, Vietnam, United States, Myanmar |
| Ddu | Thailand, France, India, United States, Myanmar |