Cognomen Silias (Silias 
) , all over the world, is a rare last name. The last name Silias is characteristic of Mexico, where it is a rare surname, Greece, and Nigeria, where it is a very rare surname. Also, Silias is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Silias | South Africa, Mexico, Nigeria, India, Democratic Republic of the Congo |