Cognomen Suriyajak (Suriyajak 
) , in all the world, is a very rare surname. The family name Suriyajak is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Suriyajak | Thailand |
| thanwa suriyajak Laotian actor, singer and model, LA (b. 1991) |
|
Nolnut Ratchanol, Suriya, Anurak, Pichit, Patchara, Pornchai, Thitinichanun, Kriangkrai, and Woranichanun