Cognomen Šmuc (Schmutz 
, Šmuc 
, Шмуц 
) , all over the world, is quite a common last name. The surname Šmuc is habitual in Switzerland, where it is quite a common surname, Austria, where it is quite a rare surname, and Croatia. Measured by absolute frequency, it is commonest in Switzerland, Germany, and the United States. Much less frequently, Šmuc is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Schmutz | Germany, Austria, Switzerland, France, United States |
| Šmuc | Slovenia, Croatia |
| Шмуц | Ukraine, Russia |
| janez kapistran šmuc Slovene priest and writer, SI (b. 1831) |
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| lojze šmuc Slovene photographer (b. 1897) |
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| vojka šmuc SI (b. 1923) |
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sonja šmuc SI |
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| andrej šmuc Slovene geologist, SI (b. 1974) |
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| tomislav šmuc Slovene volleyball player, SI (b. 1976) |
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| joško šmuc Slovene photographer, SI |
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| vida pirnat-šmuc SI |
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| nastja rogan šmuc SI |
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| tina šmuc SI (b. 1980) |
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| miha šmuc SI |
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| boštjan šmuc SI |
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