Cognomen Labarca (Labarca 
) , all over the world, is quite a rare family name. The family name Labarca is characteristic of Latin America and the Caribbean, particularly Chile, where it is quite a common surname, Venezuela, where it is quite a rare surname, and Puerto Rico. Not in comparison with a country's population, it is the most numerous in Chile, Venezuela, and the United States. Much less frequently, Labarca is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Labarca | Chile, United States, Venezuela, Philippines, Colombia |
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amanda labarca hubertson Chilean diplomat, educator, writer, and feminist (1886-1975), CL (b. 1886) |
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carlos contreras labarca Chilean politician, CL (b. 1899) |
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santiago labarca CL (b. 1893) |
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eduardo labarca Chilean journalist, CL (b. 1938) |
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carlos leyton labarca former Mayor of Pichilemu, Chile, CL (b. 1954) |
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| nectario andrade labarca (b. 1917) |
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| andrea labarca Chilean singer, CL (b. 1950) |
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| pedro labarca prado Chilean biophysicist, CL (b. 1950) |
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| rafael labarca Ph.D. Instituto de Matemática Pura e Aplicada 1985 (b. 1957) |
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| rafael labarca researcher, ORCID id # 0000-0002-5791-5522 |
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| gonzalo labarca researcher |
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