Family name Otaegui (Otaegui 
) , around the world, is a rare last name. The family name Otaegui is habitual in Argentina, where it is a rare surname, Spain, and Chile. Measured by absolute frequency, it most frequently occurs in Argentina, Spain, and Peru. Very seldom, Otaegui is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Otaegui | United States, Argentina, Peru, Chile, Spain |
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manuel josé soffia otaegui CL (b. 1845) |
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| cristina otaegui Uruguayan writer, UY (b. 1873) |
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ángel otaegui Spanish politician (1942-1975), ES (b. 1942) |
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| miguel a. otaegui Uruguayan architect, UY (b. 1916) |
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| laura busca otaegui (b. 1912) |
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| maria pilar otaegui (1935–1994) co-founder of the Spanish Club of Sydney (b. 1935) |
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amaia arranz otaegui ES (b. 1987) |
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| alicia otaegui ES (b. 1963) |
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| maría eugenia quevedo otaegui basque politician |
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| imanol otaegui researcher |
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| david otaegui researcher |
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| adrian otaegui Spanish golfer (1992-), ES (b. 1992) |
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Mr, Hugo, Fran, Ivan, Ibon, Iker, Olga, Uxue, Maria, Marta, Marã, Maite, Miren, Sandy, Amaia, Asier, Aitor, Cesar, Cindy, Berta, Borja, Bruno, Eldo, Elsa, Tony, Juan, Ms, Ana, Ane, Pat, Luz, Jon, Mark, Sara, Alex, Caro, Karim, Cami, Rosa, Dora, Lara, Lide, Loli, Luis, Jose, John, Joan, Jeff, Raul, and Kevin