Surname Đai (Die 
, Đai 
) , all around the world, is a common family name. The surname Đai is habitual in Ivory Coast, where it is quite a common surname, Myanmar, where it is quite a rare surname, and Mauritius. In absolute terms, it is the most numerous in Indonesia, Ivory Coast, and Myanmar. Likewise, Đai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Die | France, China, Ivory Coast, Indonesia, Myanmar |
| Đai | Myanmar, Vietnam |