Cognomen Wong May (Wong May 
, วงศ์อาจ 
) , throughout the world, is a rare last name. The surname Wong May is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, Wong May is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wong May | Malaysia |
| วงศ์อาจ | Thailand |