Cognomen Letelier (Letelier 
, Летельер) , all around the world, is quite a common last name. The cognomen Letelier is characteristic of Chile, where it is quite a common surname, Sweden, where it is a rare surname, and Argentina. Not in comparison with a country's population, it is commonest in Chile, Argentina, and the United States. Much less frequently, Letelier is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Letelier | Argentina, Brazil, France, Chile, United States |
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ambrosio letelier CL (b. 1837) |
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valentín letelier politico chileno y miembro del partido radical, CL (b. 1852) |
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| mauricio lagos letelier Chilean politician, CL (b. 1854) |
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luis felipe letelier icaza Chilean lawyer and businessperson (1906-1993), CL (b. 1906) |
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carlos letelier Chilean lawyer, CL (b. 1911) |
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alfonso letelier Chilean composer, CL (b. 1912) |
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| aníbal letelier Chilean politician, CL (b. 1862) |
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héctor alejandro correa letelier Chilean jurist, CL (b. 1915) |
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eugenio velasco letelier Chilean politician and lawyer (1918-2001), CL (b. 1918) |
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fabiola letelier Chilean lawyer and human rights activist, CL (b. 1929) |
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hernán rivera letelier Chilean novelist, CL (b. 1950) |
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| jorge prieto letelier Chilean politician, CL (b. 1905) |
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felipe letelier Chilean politician, CL (b. 1956) |
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juan pablo letelier morel Chilean politician, CL (b. 1961) |
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josé letelier Chilean association football player, CL (b. 1966) |
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