Last name Završnik (Završnik 
) , worldwide, is a rare cognomen. The surname Završnik is habitual in Southern Europe, particularly Slovenia, where it is quite a common surname, and Croatia, where it is a rare surname.
| VARIANT | COUNTRY |
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| Završnik | Slovenia, Croatia |
| josip završnik (b. 1769) |
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| rudolf završnik SI (b. 1899) |
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alojz završnik SI (b. 1953) |
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| izidor završnik SI (b. 1917) |
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| stanko završnik SI (b. 1930) |
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| boris završnik SI (b. 1951) |
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| nikolaj završnik SI (b. 1958) |
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| gorazd završnik Slovenian ski jumper |
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| jernej završnik researcher |
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| davorka završnik researcher |
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| miha završnik SI (b. 1971) |
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| dušan završnik SI |
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| aleš završnik SI |
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| tadej završnik SI |
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| bruno završnik SI |
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