Aguilar may refer to:
People Aguilar (surname)
Places
Spain Aguilar de Bureba, municipality and town in the province of Burgos, Castile and León Aguilar de Campoo, town in the province of Palencia, Castile and León Aguilar de Campos, municipality located in the province of Valladolid, Castile and León Aguilar de Codés, town and municipality in Navarre Aguilar de la Frontera, municipality and town in the province of Córdoba, Andalusia Aguilar de Segarra, municipality in the province of Barcelona, Catalonia Aguilar del Alfambra, municipality in the province of Teruel, Aragon Aguilar del Río Alhama, municipality in La Rioja Aguilar (Graus), a locality in Aragon
Elsewhere Aguilar, Colorado, town in Las Animas County, Colorado, USA Aguilar, Pangasinan, municipality in the province of Pangasinan, Philippines Cape D'Aguilar, cape on Hong Kong Island D'Aguilar National Park, national park in Queensland, Australia
Other – condemned 1825 Château d'Aguilar, a Cathar castle in the Aude département, France Félix Aguilar Observatory, (Observatorio Félix Aguilar), astronomical observatory in Argentina Gran Atlas Aguilar, first comprehensive world atlas of Spanish origin Aguilar v. Felton, 473 U.S. 402 (1985), United States Supreme Court decision interpreting the Establishment Clause of the First Amendment to the United States Constitution Aguilar v. Texas, 378 U.S. 108 (1964), U.S. Supreme Court decision interpreting and applying the Fourth Amendment to the United States Constitution Aguilarite, mineral named for Ponciano Aguilar