Horcasitas is a surname, and may refer to:
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Juan Francisco de Güemes y Horcasitas, 1st Count of Revillagigedo (1681–1766), Spanish general, governor of Havana, captain general of Cuba, and viceroy of New Spain
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Juan Vicente de Güemes Padilla Horcasitas y Aguayo, 2nd Count of Revillagigedo (1740–1799), Spanish military officer and viceroy of New Spain
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