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In the world, Giljen (Giljen
) is a very rare epicene forename. The given name Giljen is characteristic of Montenegro, where it is quite a rare masculine name, and Philippines, where it is a very rare predominantly feminine, but scarcely masculine name. More frequently, Giljen is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Giljen | Serbia, Philippines, United States, South Africa, Montenegro |