Surname Similun (Similun 
) , across the world, is an extremely rare family name. Much more frequently, Similun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Similun | Thailand |
Sripan, Karwaothong, Lmamericano, Rotroongruangkit, Hongpukdee, Saensuwan, and Ruengwattanachot