Cognomen ไวทย์ (Wai 
, ไวทย์ 
) , all over the world, is a prevalent family name. The surname ไวทย์ is characteristic of Mongolia, where it is a prevalent surname, Myanmar, and Malaysia, where it is a common surname (explore the name in all countries). Measured by absolute frequency, the name is most common in Myanmar, India, and Malaysia. Also, ไวทย์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wai | Hong Kong, Myanmar, India, Mongolia, Malaysia |
| ไวทย์ | Thailand |