Family name Wai Yhann (Wai Yhann 
) , globally, is an extremely rare surname. The family name Wai Yhann is characteristic of South-eastern Asia, particularly Singapore, where it is a very rare surname. More prevalently, Wai Yhann is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wai Yhann | Singapore |