Surname Wichaisak (Wichaisak 
) , all around the world, is an extremely rare cognomen. The family name Wichaisak is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, Wichaisak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wichaisak | Thailand |