Family name Horno (Horno 
, Ornu 
, Орно) , throughout the world, is a rare cognomen. The surname Horno is characteristic of Uruguay, where it is a rare surname, Spain, and Denmark. Measured by absolute frequency, this name is the most popular in Spain, Argentina, and Denmark. More prevalently, Horno is the forename as well as the last name.
| ricardo horno alcorta Spanish politician and writer (1883-1948), ES (b. 1883) |
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| ricardo horno liria (b. 1910) |
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| mariano horno liria Spanish politician, ES (b. 1922) |
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| luis horno liria (b. 1915) |
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| josé horno researcher ORCID ID = 0000-0002-4915-3038 |
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