Cognomen ไวยมัย (Wai Mai 
, ไวยมัย 
) , worldwide, is a very rare family name. The last name ไวยมัย is habitual in Thailand, where it is a very rare surname, and Canada, where it is an extremely rare surname. More frequently, ไวยมัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wai Mai | Myanmar, Malaysia, Canada |
| ไวยมัย | Thailand |