Family name Alcázar (Alcazar 
, Alkazar 
, Alcázar ) , throughout the world, is a common last name. The family name Alcázar is habitual in Latin America and the Caribbean, particularly Costa Rica, where it is quite a common surname, Bolivia, and Mexico. Measured by absolute frequency, this name is the most popular in Mexico, Philippines, and Spain. Very seldom, Alcázar is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Alcazar | Peru, Colombia, Philippines, Spain, Mexico |
| Alkazar | Philippines, France, Spain, United States, Mexico |
| Alcázar | Peru, Colombia, Spain, United States, Mexico |
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andrés alcázar Spanish physician, ES (b. 1490) |
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baltasar del alcázar jugador de futbol, ES (b. 1530) |
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| melchor alcázar (b. 1520) |
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| luis del alcázar theologian, ES (b. 1554) |
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| jacinto de alcázar arriaza Spanish economist and writer (1597-1667), ES (b. 1597) |
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| bartolomé de alcázar ES (b. 1648) |
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| francisco alcázar (b. 1656) |
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| mariana alcázar actress, ES (b. 1739) |
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| pedro andrés del alcázar Spanish and later Chilean Army officer and war hero (1752-1820), CL (b. 1752) |
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| juana garcía ugalde y alcázar Spanish actress, ES (b. 1764) |
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| agustín lópez de alcázar Chilean politician (1780-1850), CL (b. 1780) |
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| manuel alcázar Spanish architect, 1781-ca. 1840 (b. 1781) |
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mariana del alcázar 12th First Lady of Ecuador. Second wife of Gabriel García Moreno., EC (b. 1837) |
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| ignacio antonio de alcázar EC (b. 1780) |
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manuel alcázar Spanish painter, draughtsperson and engraver, ES (b. 1858) |
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Ma, Abel, Ammy, Aida, Aile, Aura, Cris, Beto, Kiro, Paco, Pepe, Pili, Raul, Rosa, Romy, Rony, Rita, Ruth, Dani, Gaby, Gaia, Gina, Aroa, Lara, Anna, Alma, Mar, Mª, Ale, Ana, Ary, Arq, Ada, Pau, Gil, Leo, Eva, Fer, Fco, Iam, Mari, Marc, Mary, Mila, Sara, Alex, Alba, Aldo, and Laia