Worldwide, Miljen (Miljen 
) is a very rare unisex first name. The first name Miljen is habitual in Croatia, where it is a rare boy's name, and Philippines, where it is a very rare largely girly, but uncommonly male name. Much less frequently, Miljen is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Miljen | Croatia, France, Slovenia, Venezuela, Philippines |
| miljen kljaković Serbian production designer, HR (b. 1950) |
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| miljen kreka kljakovic French production designer, FR (b. 1950) |
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| miljen mikic Ph.D. University of Zagreb 2014 |
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