Surname Watthanakasikam (Watthanakasikam 
) , in the world, is an extremely rare last name. The surname Watthanakasikam is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Watthanakasikam | Thailand |
| suthiphon watthanakasikam (b. 1985) |
|