Family name Phornphisut (Phornphisut 
) , all around the world, is a very rare cognomen. The last name Phornphisut is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Phornphisut is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phornphisut | Thailand |