Family name พุทธิวงศาสุนทร (พุทธิวงศาสุนทร 
) , throughout the world, is a very rare cognomen. The last name พุทธิวงศาสุนทร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พุทธิวงศาสุนทร | Thailand |