Spanish Indefinite Articles – un, una, unos, unas

Welcome to our grammar lesson about Spanish indefinite articles (“artículos indeterminados”).

Indefinite articles in Spanish are: ununaunosunas.

These articles precede nouns in many circumstances.

We have 4 different forms because the article needs to match the noun’s gender and number.

This lesson will teach you everything about Spanish indefinite articles, with examples of their use.

At the end you’ll find a Quiz and an Exercise for practice.

The 4 indefinite articles

Because we need to match the noun’s gender and number, there are 4 different indefinite articles:


Their meanings are:

  • un, una are equivalent to the English “a”, “an” or “one”.
  • unos, unas are equivalent to the English “some” or “a few”

Examples with nouns

un + masculine singular nouns:

un coche, un profesor, un rayo, un árbol
a car, a teacher, a ray, a tree

una + feminine singular nouns:

una casa, una canción, una flor, una mujer
a house, a song, a flower, a woman

unos + masculine plural nouns:

unos amigos, unos vasos, unos problemas
some friends, a few glasses, some problems

unas + feminine plural nouns:

unas señoras, unas manzanas, unas palabras
a few ladies, some apples, a few words

Sentences with indefinite articles

Here are some example sentences that include indefinite articles:

Hay un hombre en la casa.
There is a man in the house.

Mallorca es una isla de España.
Mallorca is an island of Spain. 

Tengo unos libros interesantes.
I have a few interesting books.

Manuel conoce a unas chicas muy simpáticas.
Manuel knows some very nice girls.



Take this short Quiz to test your knowledge about Spanish indefinite articles:


In the following sentences, fill the gaps using “un – una – unos – unas”.

Note: in this lesson, we haven’t really explained how to guess if a noun is masculine or feminine (we have another lesson for that). But you can try to guess anyway!

Click on the gray spaces to see the solutions:

1) Laura está con unas amigas.
Laura is with some friends. (female friends)

2) Ella tiene un mensaje para ti.
She has a message for you.

3) Yo tengo unos caramelos muy ricos.
I have some delicious candies.

4) Una cerveza, por favor.
A beer, please.

5) En la biblioteca hay unos libros muy interesantes.
In the library there are some very interesting books.

6) Un chico de mi clase toca el violín.
A boy in my class plays the violin.

What about definite articles?

In this lesson we have learned only about indefinite articles.

But there are other articles in Spanish, called definite articles (ellaloslas).

Click here to learn about Definite Articles!

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