French Possessive Adjectives: A Complete Guide

Vocalyra teaching team · Last updated: October 5, 2026

In French, showing who owns something requires a small but important word called a possessive adjective, like 'my', 'your', or 'her'. While common, their rules can be tricky because they don't always work the way they do in English. This guide will walk you through everything you need to know, from the basic chart to special cases and common mistakes.

What Are French Possessive Adjectives?

Possessive adjectives (in French, 'les adjectifs possessifs') are words that specify ownership. They are placed before a noun to show who it belongs to. The single most important rule to remember is this: a French possessive adjective agrees in gender (masculine or feminine) and number (singular or plural) with the noun it describes, not with the owner.

This is the main difference from English. Whether it's 'his car' or 'her car', English uses the owner's gender. In French, the word for 'car' ('voiture') is feminine, so it will always be 'sa voiture', regardless of who owns it.

The Full Table of Possessive Adjectives

This table shows all the possessive adjectives. To use it, first find the owner in the left column. Then, look at the noun you want to describe to find the correct adjective in the other columns.

A complete chart of French possessive adjectives.
Owner	Masculine Singular Noun	Feminine Singular Noun	Plural Noun (Masc. or Fem.)
je (I)	mon	ma	mes
tu (you, informal)	ton	ta	tes
il / elle / on (he / she / one)	son	sa	ses
nous (we)	notre	notre	nos
vous (you, formal or plural)	votre	votre	vos
ils / elles (they)	leur	leur	leurs

How to Choose the Right Adjective

Follow these two steps:

1. Identify the owner to find the right row (e.g., for 'my', use the 'je' row).
2. Look at the gender and number of the noun being possessed to find the right column (e.g., for 'book', which is 'livre', a masculine singular noun, you use the masculine singular column).

Here are some examples:

J'ai un livre (masculine singular). C'est **mon** livre. (It's my book.)
Tu as une idée (feminine singular). C'est **ta** idée. (It's your idea.) But wait, there's a special rule for this one, see below!
Elle a des amis (plural). Ce sont **ses** amis. (They are her friends.)
Nous avons une maison (feminine singular). C'est **notre** maison. (It's our house.)
Vous avez des clés (plural). Ce sont **vos** clés. (They are your keys.)
Ils ont un projet (masculine singular). C'est **leur** projet. (It's their project.)
Ils ont des projets (plural). Ce sont **leurs** projets. (They are their projects.)

Special Case: Vowels and Mute 'h'

For the sake of pronunciation, French avoids having two vowel sounds clash. When a feminine singular noun begins with a vowel (a, e, i, o, u) or a silent 'h', you must use the masculine forms 'mon', 'ton', and 'son' instead of 'ma', 'ta', and 'sa'.

This rule is only for sound. The noun itself does not change its gender; it is still feminine. The rule only applies to 'ma', 'ta', and 'sa'.

**mon a**mie (my friend, female), not "ma amie".
**ton é**cole (your school), not "ta école".
**son h**abitude (his/her habit), not "sa habitude".

Common Mistakes and Clarifications

The most frequent error is matching the adjective with the owner instead of the object. Remember: the object is what matters.

Mistake: Marie a un vélo. C'est sa vélo. (Marie is female, so use 'sa'.)
Correction: Marie a un vélo. C'est **son** vélo. (The noun 'vélo' is masculine.)
Mistake: Paul a une voiture. C'est son voiture. (Paul is male, so use 'son'.)
Correction: Paul a une voiture. C'est **sa** voiture. (The noun 'voiture' is feminine.)

Because 'son', 'sa', and 'ses' can mean 'his', 'her', or 'its', there can be ambiguity. Context usually makes it clear. If you need to clarify, you can add 'à lui' (his) or 'à elle' (her) after the noun.

C'est **sa** voiture. (It's his car or her car.)
C'est **sa** voiture **à lui**. (It's his car.)
C'est **son** livre **à elle**. (It's her book.)

Another point of confusion is 'leur' versus 'leurs'. The rule is simple: 'leur' is for a single object owned by 'they', and 'leurs' is for multiple objects owned by 'they'.

Les parents aiment **leur** enfant. (The parents love their child.) (One child, so 'leur'.)
Les parents aiment **leurs** enfants. (The parents love their children.) (Multiple children, so 'leurs'.)

Using 'Votre' and 'Vos' for Politeness

The pronoun 'vous' is used to address someone formally (the 'polite you') or to address a group of people. Consequently, 'votre' and 'vos' are used in the same situations.

As a formal 'you' for one person: "Monsieur, où est **votre** voiture?" (Sir, where is your car?)
As a plural 'you' for a group: "Les enfants, où sont **vos** parents?" (Children, where are your parents?)

Body Parts: A Different Approach

When talking about body parts, French rarely uses possessive adjectives. Instead, it uses a reflexive pronoun ('me', 'te', 'se', etc.) with a definite article ('le', 'la', 'les'). The ownership is implied by the reflexive pronoun, so adding a possessive would be redundant.

Je me brosse **les** dents. (I brush my teeth.) (Literally, 'I brush the teeth for myself.')
Il s'est cassé **la** jambe. (He broke his leg.)

This also applies when expressing pain:

J'ai mal **à la** tête. (My head hurts / I have a headache.) (Not: J'ai mal à ma tête.)

A Note on Possessive Pronouns

Do not confuse possessive adjectives with possessive pronouns. Adjectives describe a noun: 'mon livre' (my book). Pronouns replace a noun: 'le mien' (mine). They are used to avoid repeating the noun.

C'est **ton** sac? (Is this your bag?) - Adjective
Non, ce n'est pas **le mien**. (No, it is not mine.) - Pronoun

Quick self-check

How would you say 'her brother' and 'his sister' in French?
Show answer
You would say 'son frère' for 'her brother' (because 'frère' is masculine) and 'sa sœur' for 'his sister' (because 'sœur' is feminine). The adjective agrees with the noun possessed, not the owner.
Why is 'my school' translated as 'mon école' and not 'ma école'?
Show answer
Because 'école' is a feminine noun that starts with a vowel. For pronunciation, we use the masculine form 'mon' instead of 'ma' before feminine singular nouns that start with a vowel or mute 'h'.
A family has one car and two bicycles. How do you say 'their car' and 'their bicycles'?
Show answer
'Leur voiture' (because 'voiture' is singular) and 'leurs vélos' (because 'vélos' is plural). 'Leur' is for one item, 'leurs' is for multiple items.
How do you translate 'She is washing her hands'?
Show answer
'Elle se lave les mains'. With body parts and reflexive verbs, French uses a definite article ('les') instead of a possessive adjective ('ses').

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