Surname คูณศักดิ์บุญศิริ (คูณศักดิ์บุญศิริ 
) , across the world, is an extremely rare family name. The last name คูณศักดิ์บุญศิริ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| คูณศักดิ์บุญศิริ | Thailand |