Surname Sungkhaphan (Sungkhaphan 
) , worldwide, is a very rare cognomen. The family name Sungkhaphan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sungkhaphan | Thailand |
Siriwit, Piyarat, Thiptara, and Watcharaporn