Cognomen Horna (Horna 
, Орна 
) , in the world, is a common last name. The family name Horna is characteristic of Peru, where it is quite a common surname, Panama, where it is quite a rare surname, and Czechia. Measured by absolute frequency, it is the most numerous in Peru, Czechia, and Spain. Very seldom, Horna is the forename as well as the last name.
| miguel de horna Spanish military personnel (?-1640), ES (b. 1600) |
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richard horna CZ (b. 1892) |
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| konstantin horna Austrian byzantinist and high school teacher, AT (b. 1867) |
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| emil horna (b. 1858) |
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| vojtěch horna (b. 1896) |
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| miloš horna CZ (b. 1897) |
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| angel de horna ES (b. 1899) |
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| kati horna Mexican artist, MX (b. 1912) |
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| miroslav horna CZ (b. 1909) |
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luis horna Peruvian tennis player, PE (b. 1980) |
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annett horna German athletics competitor, DE (b. 1987) |
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| luis ignacio de horna Spanish illustrator of children's and youth literature, ES (b. 1942) |
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| miroslav horna (b. 1940) |
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| hernán horna (b. 1942) |
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| oscar honorio horna Peruvian politician, PE (b. 1962) |
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