Cognomen Siskia (Siskia 
) , in the world, is a very rare last name. The family name Siskia is characteristic of Indonesia, where it is a very rare surname, Honduras, and Mexico, where it is an extremely rare surname. More frequently, Siskia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siskia | South Africa, Mexico, Indonesia, Nicaragua, Colombia |