Cognomen Siu-Jen (Siu-Jen 
) , across the world, is an extremely rare last name. The cognomen Siu-Jen is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Likewise, Siu-Jen is the forename as well as the last name. Parts of the name also exists independently as a first name Siu, and a first name Jen.
| VARIANT | COUNTRY |
|---|---|
| Siu-Jen | Chile |