Cognomen Jaunarena (Jaunarena 
) , in the entire world, is a rare last name. The cognomen Jaunarena is characteristic of Latin America and the Caribbean, particularly Uruguay, where it is quite a rare surname, Argentina, where it is a rare surname, and Bolivia. Much less frequently, Jaunarena is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Jaunarena | Spain, Bolivia, Uruguay, Argentina, France |
| josé xavier gorosterratzu jaunarena (b. 1877) |
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horacio jaunarena Argentinian lawyer and politician, AR (b. 1942) |
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| ibon jaunarena researcher |
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| jorge jaunarena researcher |
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| ion jaunarena Spanish pelotari, ES (b. 1992) |
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Ana, Pedro, Delia, Diana, Diego, Laura, Leoni, Lucia, Lucas, Luana, Lydia, Jorge, Juana, Nancy, Nilda, Norma, Noemi, Nelly, Ester, Edgar, Emily, Ethel, Pablo, Paula, Bruno, Berta, Jon, Mili, Aida, Raul, Luis, Jose, Juan, Tofe, Nora, Hugo, Oscar, Irma, Maria, Maite, Maita, Mirta, Mikel, Sonia, Amaia, Aguus, Celia, Cesar, Ibon, and Martin