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

• Category:Spanish noun forms: Spanish nouns that are inflected to display grammatical relations other than the main form.
• Category:Spanish augmentative nouns: Spanish nouns that are derived from a base word to convey big size or big intensity.
• Category:Spanish collective nouns: Spanish nouns that indicate groups of related things or beings, without the need of grammatical pluralization.
• Category:Spanish countable nouns: Spanish nouns that can be quantified directly by numerals.
• Category:Spanish diminutiva tantum: Spanish nouns or noun senses that are mostly or exclusively used in the diminutive form.
• Category:Spanish diminutive nouns: Spanish nouns that are derived from a base word to convey endearment, small size or small intensity.
• Category:Spanish nouns by gender: Spanish nouns organized by the gender they belong to.
• Category:Spanish nouns by inflection type: Spanish nouns organized by the type of inflection they follow.
• Category:Spanish nouns with other-gender equivalents: Spanish nouns that refer to gendered concepts (e.g. actor vs. actress, king vs. queen) and have corresponding other-gender equivalent terms.
• Category:Spanish pluralia tantum: Spanish nouns that are mostly or exclusively used in the plural form.
• Category:Spanish proper nouns: Spanish nouns that indicate individual entities, such as names of persons, places or organizations.
• Category:Spanish singularia tantum: Spanish nouns that are mostly or exclusively used in the singular form.
• Category:Spanish nouns with unattested plurals: Spanish nouns with unattested plurals.
• Category:Spanish uncountable nouns: Spanish nouns that indicate qualities, ideas, unbounded mass or other abstract concepts that cannot be quantified directly by numerals.
• Category:Spanish nouns with unknown or uncertain plurals: Spanish nouns with unknown or uncertain plurals.