Old Spanish terms that indicate people, beings, things, places, phenomena, qualities or ideas.

• Category:Old Spanish noun forms: Old Spanish nouns that are inflected to display grammatical relations other than the main form.
• Category:Old Spanish diminutive nouns: Old Spanish nouns that are derived from a base word to convey endearment, small size or small intensity.
• Category:Old Spanish nouns by gender: Old Spanish nouns organized by the gender they belong to.
• Category:Old Spanish nouns with other-gender equivalents: Old Spanish nouns that refer to gendered concepts (e.g. actor vs. actress, king vs. queen) and have corresponding other-gender equivalent terms.
• Category:Old Spanish proper nouns: Old Spanish nouns that indicate individual entities, such as names of persons, places or organizations.