Other
- Chateau 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
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