Family name ดะห์ (Da 
, ดะห์ 
) , in the world, is a widespread cognomen. The last name ดะห์ is characteristic of Uruguay, where it is a common surname, Myanmar, where it is quite a common surname, and Egypt (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in India, China, and Myanmar. Also, ดะห์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Da | Myanmar, Egypt, India, Indonesia, China |
| ดะห์ | Thailand |