Hidalgo can mean:

• A traditional title of a person of nobility or gentry in the Spanish language, derived from Hijo de algo "Son of some wealth".
• Miguel Hidalgo, father of the independence of Mexico.
• Hidalgo State, a state in central Mexico.
• Hidalgo (movie) starring Viggo Mortensen, named for Frank Hopkins' horse of the same name
• The asteroid 944 Hidalgo
• The Treaty of Guadalupe Hidalgo, which ended the Mexican-American war