Last name Osorno (Osorno 
) , around the globe, is a common family name. The cognomen Osorno is characteristic of Latin America and the Caribbean, particularly Colombia, where it is quite a common surname, Nicaragua, and Costa Rica, where it is quite a rare surname. Not in comparison with a country's population, it is commonest in Latin America and the Caribbean, particularly Colombia, Mexico, and Nicaragua. Much less frequently, Osorno is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Osorno | Mexico, Colombia, Philippines, United States, Nicaragua |
| eusebio osorno ES (b. 1500) |
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| jose francisco osorno Mexican military personnel, MX (b. 1769) |
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| david nicolás osorno Nicaraguan politician, NI (b. 1850) |
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guillermo allier y osorno badminton administrator, MX (b. 1920) |
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guillermo osorno molina Nicaraguan politician, NI (b. 1950) |
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guillermo osorno Mexican writer and journalist, MX (b. 1963) |
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| daniel osorno Mexican footballer, MX (b. 1979) |
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| omar osorno Mexican association football player, MX (b. 1979) |
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| diego enrique osorno Mexican reporter and writer, MX (b. 1980) |
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| tomás osorno researcher |
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| maría estrella vázquez osorno Mexican politician |
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| angélica osorno Ph.D. Massachusetts Institute of Technology 2010, CO |
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| violeta margarita vázquez osorno Mexican politician |
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| john bustamante osorno |
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| mateo osorno Colombian cyclist, CO |
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