All around the world, Sillen (西伦 
, Sillen 
) is a rare largely male, but uncommonly feminine given name. The forename Sillen is habitual in Sweden, where it is a rare masculine name, China, where it is a very rare mostly masculine, but seldom female name, and India, where it is an extremely rare epicene name. Also, Sillen is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 西伦 | China |
| Sillen | Sweden, Belgium, United States, Argentina, Netherlands |