Cognomen Gacitúa (Gacitúa 
) , all around the world, is a rare last name. The surname Gacitúa is habitual in Chile, where it is a rare surname, Argentina, where it is a very rare surname, and Spain. Much less frequently, Gacitúa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gacitúa | Argentina, Peru, United States, Spain, Chile |
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lindor pérez gacitúa Chilean officer, CL (b. 1854) |
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| fernando cabrera gacitúa Chilean politician (1841-1921), CL (b. 1841) |
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| cornelio moyano gacitúa Argentinian judge, AR (b. 1858) |
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óscar gacitúa Chilean painter, CL (b. 1953) |
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| óscar landerretche gacitúa Chilean economist, CL (b. 1949) |
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| tomás a gacitúa researcher |
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| manuel alejandro gacitúa researcher |
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Ana, Karli, Katty, Paula, Pablo, Paola, Pedro, Pilar, Raúl, Ronny, Diego, Laura, Jaime, José, Johan, Jorge, Julio, Iván, Oscar, María, Miguel, Sandra, Karla, Karen, Karin, Carla, Mary, Maca, Alex, Clau, Rosa, Dani, Luis, Jose, Juan, Nico, Sheila, Enzo, Omar, Yeni, Maria, Mario, Marco, Mauro, Mirna, Suley, Sofia, Anita, Hugo, and Silvia