Family name Luznik (Luznik 
) , worldwide, is a rare surname. The cognomen Luznik is characteristic of Slovenia, where it is quite a common surname, Austria, where it is a rare surname, and Croatia. Measured by absolute frequency, it most frequently occurs in Slovenia, Austria, and Argentina.
| VARIANT | COUNTRY |
|---|---|
| Luznik | Italy, Austria, Argentina, Slovenia, Croatia |
| valentin luznik SI (b. 1841) |
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| jernej luznik SI (b. 1902) |
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| leo luznik researcher |
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| nika luznik researcher, ORCID id # 0000-0002-7576-4043 |
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