Cognomen Siramanakun (Siramanakun 
) , in the world, is an extremely rare last name. The family name Siramanakun is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Siramanakun | Thailand |
Piyanut, Nongyao, and Pitchatorn