Cognomen ภูสิทธิโกศล (ภูสิทธิโกศล 
) , in all the world, is an extremely rare family name. The surname ภูสิทธิโกศล is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ภูสิทธิโกศล | Thailand |