Cognomen Amornsak (Amornsak 
) , around the world, is a rare family name. The family name Amornsak is habitual in Thailand, where it is a rare surname, and Australia, where it is a very rare surname. Likewise, Amornsak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Amornsak | Australia, Japan, Thailand, United States |