Surname ไชย์ (Chai 
, ไชย์ 
) , worldwide, is a widespread last name. The surname ไชย์ is habitual in Malaysia, where it is a common surname, British Virgin Islands, and Singapore (explore the name in all countries). Not in comparison with a country's population, it is commonest in China, Malaysia, and Indonesia. Very seldom, ไชย์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chai | China, Indonesia, Malaysia, Singapore, Myanmar |
| ไชย์ | Thailand |