Family name สิทธิพงศ์ภัคร (สิทธิพงศ์ภัคร 
) , in the world, is an extremely rare surname. The family name สิทธิพงศ์ภัคร is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| สิทธิพงศ์ภัคร | Thailand |