Last name Isasi (Isasi 
, イサシ 
, Исаси 
) , throughout the world, is quite a common surname. The cognomen Isasi is habitual in Paraguay, where it is quite a common surname, Andorra, and Honduras, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Latin America and the Caribbean, particularly Paraguay, Argentina, and Peru. Very seldom, Isasi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Isasi | Paraguay, Argentina, Honduras, Peru, Spain |
| イサシ | Japan |
| Исаси | Kazakhstan |
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pascual de isasi isasmendi Spanish politician, ES (b. 1839) |
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| andrés de isasi, 1st marquis of barambio Spanish Marquis (b. 1820) |
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| andrés isasi Basque Composer, ES (b. 1890) |
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| ernesto de zulueta e isasi Spanish diplomat, ES (b. 1892) |
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| luis quintanilla isasi Spanish painter (1893-1978), ES (b. 1893) |
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| enrique de isasi Spanish writer (1899-1983), ES (b. 1899) |
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xabier isasi researcher, ES (b. 1956) |
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| salvador landa isasi ES (b. 1905) |
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marta isasi Chilean politician, CL (b. 1966) |
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maría isasi Spanish actress, ES (b. 1975) |
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iñaki isasi road bicycle racer, ES (b. 1977) |
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| mikel isasi gabilondo Spanish politician, ES (b. 1931) |
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| juan ángel romero isasi Paraguayan association football player (1934-2009), PY (b. 1934) |
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| santiago isasi Spanish association football player, ES (b. 1936) |
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| jesús isasi Spanish cyclist, ES (b. 1940) |
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