Surname Saiyaphun (Saiyaphun 
) , throughout the world, is an extremely rare last name. The family name Saiyaphun is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Saiyaphun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saiyaphun | India, Thailand |