Surname Singwai (Singwai 
) , worldwide, is a very rare last name. The family name Singwai is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Singwai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Singwai | Thailand, United States |