Family name Kojc (Kojc 
) , around the world, is a rare cognomen. The family name Kojc is habitual in Slovenia, where it is quite a rare surname, Croatia, where it is a rare surname, and Australia, where it is a very rare surname. Very seldom, Kojc is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kojc | Slovenia, Australia, Croatia, Germany |
| martin kojc lovenian parapsychologist, writer and hypnotist, SI (b. 1901) |
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| maja kojc SI (b. 1968) |
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| nika kojc researcher (ORCID 0000-0003-1893-4349), SI |
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| helena vrecl-kojc SI |
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| teja senekovič kojc SI |
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