Last name Gastelumendi (Gastelumendi 
) , around the globe, is a rare surname. The last name Gastelumendi is characteristic of Latin America and the Caribbean, particularly Uruguay, where it is quite a rare surname, Peru, where it is a rare surname, and Argentina. Much less frequently, Gastelumendi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gastelumendi | Argentina, Uruguay, United States, Peru, Spain |
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enriqueta gastelumendi Argentinian sculptor, AR (b. 1913) |
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| luis felipe pita gastelumendi (b. 1949) |
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| rené gastelumendi PE |
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Mr, Karla, Pablo, Pilar, Denis, Diego, Lauti, Lidia, Lucia, Lydia, Jaime, Jorge, Julia, Julio, Elisa, Vasco, Velda, Oscar, Martin, Maruja, María, Magaly, Clara, Monica, Anita, Sasha, Ana, Pia, Mara, Mili, Sara, Abel, Paul, Rosa, Rene, Dora, Luis, Jose, Juan, Nora, Elsa, Emma, Hugo, Maria, Marco, Marã, Mateo, Sofia, and Miguel