Last name Wichinrojjarun (Wichinrojjarun 
) , globally, is a very rare cognomen. The family name Wichinrojjarun is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Wichinrojjarun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wichinrojjarun | Thailand, United States |