Cognomen Hiriart (Hiriart 
) , around the globe, is quite a rare family name. The surname Hiriart is habitual in Uruguay, where it is quite a rare surname, Argentina, and France. In absolute terms, this name is the most popular in France, Argentina, and Mexico. Much less frequently, Hiriart is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Hiriart | Argentina, Chile, France, Mexico, Uruguay |
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jean hiriart-urruty Basque writer, FR (b. 1859) |
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joseph hiriart French architect, FR (b. 1888) |
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osvaldo hiriart Chilean politician, CL (b. 1895) |
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lucía hiriart Augusto Pinochet's widow, CL (b. 1923) |
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hugo hiriart Mexican writer and playwright, MX (b. 1942) |
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inés lucía pinochet hiriart Daughter of Augustino Pinochet, CL (b. 1943) |
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marisa mazari hiriart Mexican biologist, MX (b. 1957) |
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| andré hiriart (b. 1914) |
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| mario hiriart Lay Religious, Engineer and Venerable, CL (b. 1931) |
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| rosario hiriart born:1936|; Hiriart, Rosario H.; Hiriart, Rosário, 1936- (b. 1936) |
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| jean hiriart-urruti abittu FR (b. 1927) |
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| michel hiriart French politician, FR (b. 1946) |
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| marcia hiriart Mexican scientist, MX (b. 1950) |
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| pablo hiriart Mexican journalist and writer, MX (b. 1956) |
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| berta hiriart (b. 1950) |
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