Surname Thirasuk (Thirasuk 
) , across the world, is a very rare family name. The last name Thirasuk is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Thirasuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thirasuk | Thailand |
Ausavateeranon, and Chaiyasat