Surname Liengtiraphan (Liengtiraphan 
) , in the entire world, is an extremely rare cognomen. The cognomen Liengtiraphan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Liengtiraphan | Thailand |
Som, Wansomphop, and Wansompop