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Last name Prompassorn (Prompassorn ) , worldwide, is an extremely rare surname. Much more frequently, Prompassorn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Prompassorn | Thailand |
Kangnga, Ratthaphat, Kongkrapan, Pornwatanayotin, Khanmalai, Sakonkaruhanan, Wisansart, Promprasong, Ouisakul, Phaniboot, Umarpornjayanama, Tanadvud, Dulyasribandit, Phothip, Prichejkitkun, Pungyenchavanakul, and Chaiwatthanatorn