Many Philippine placenames are derived either from a person who may have been associated with the founding of the place, or in honor of a notable person. If there is no citation for a place on this list, its etymology is usually described and referenced in the article about the person or the place.
The town was named Infanta to honor the then "Infanta queen Isabela" of the Spanish Empire [most likely Queen Isabella II of Spain, who was deposed eight years before the town was established].