Cognomen ไลย (Lai 
, ไลย 
) , in the entire world, is a widespread family name. The cognomen ไลย is characteristic of Hong Kong, where it is a prevalent surname, Macao, where it is a widespread surname, and Bermuda (explore the name in all countries). Not in comparison with a country's population, it is commonest in China, Malaysia, and Hong Kong. Very seldom, ไลย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lai | China, Malaysia, Hong Kong, Taiwan, Myanmar |
| ไลย | Thailand |