Family name Metelko (Metelko 
, Метелько 
) , across the world, is a rare cognomen. The cognomen Metelko is habitual in Slovenia, where it is quite a common surname, Croatia, where it is quite a rare surname, and Austria, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Slovenia, Croatia, and the United States. Very seldom, Metelko is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Metelko | Austria, Germany, United States, Slovenia, Croatia |
| Метелько | Russia, Ukraine |
| franc serafin metelko Slovenian priest, writer and philologist, SI (b. 1789) |
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| alojzij metelko SI (b. 1940) |
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| siegbert metelko AT (b. 1947) |
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| stane metelko SI |
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| tanja pia metelko SI |
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| tomaž metelko SI |
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| janez metelko SI |
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| damir metelko SI |
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| maja metelko SI |
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Mr, John, Joel, Joey, Judy, Tina, Tija, Nina, Evan, Hans, Ivan, Igor, Ziga, Marie, Marin, Mario, Marta, Matic, Matej, Matea, Matko, Mojca, Josh, Lynn, Luka, Geli, Ms, Ana, R-J, Lea, Marc, Mary, Mark, Matt, Miha, Sara, Sanja, Alan, Beth, Karl, Paul, Rada, Rose, Rian, Rudy, Dana, Dale, Gary, Cole, and Scott