Cognomen Koruza (Koruza 
) , in the world, is a rare surname. The cognomen Koruza is characteristic of Slovenia, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Croatia, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Slovenia, Bulgaria, and Argentina.
| VARIANT | COUNTRY |
|---|---|
| Koruza | Germany, Italy, Bulgaria, Argentina, Slovenia |
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jože koruza SI (b. 1935) |
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| katarina koruza researcher |
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| jurij koruza researcher |
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| jurij koruza SI |
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| boris koruza SI |
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| zora korošec-koruza SI |
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