Surname Suthichaiyakul (Suthichaiyakul 
) , in the entire world, is a very rare last name. The cognomen Suthichaiyakul is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Suthichaiyakul | Thailand, United States |