Muñoz ([muˈɲoθ] or [muˈɲos]) is a Spanish-language surname—with a Portuguese-language variant (Munhoz), from Basque "muinoa" (Hill) The surname was expanded during the Reconquista with massive settlements done by citizens from Navarre and Álava in New Castile and Andalusia.
As of 2014, 26.7% of all known bearers of the surname Muñoz were residents of Colombia (1:129), 21.1% of Spain (1:158), 20.3% of Chile (1:62), 6.7% of Argentina (1:458), 5.7% of Peru (1:397), 5.7% of Venezuela (1:379), 2.2% of Guatemala (1:533), 1.7% of Cuba (1:495), 1.6% of the Philippines (1:4,544), 1.6% of Nicaragua (1:272), 1.4% of Panama (1:206), 1.3% of Costa Rica (1:255) and 1.1% of the Dominican Republic (1:674).
In Spain, the frequency of the surname was higher than national average (1:158) in the following autonomous communities: In Chile, the frequency of the surname was higher than national average (1:62) in the following regions:[1]