How do you show possession in French?

Name the thing, add de, then name the owner: le sac de Julie, Julie's bag. If the owner needs an article, de merges with it, so you get la clé du bureau and la chambre des enfants. There is no French equivalent of the apostrophe.

Why is it le livre de Marie and not Marie de livre?

Because the order is the reverse of English. The possessed thing always comes first and de introduces the owner, so read the French as the book of Marie. Reversing the two nouns changes who owns what.

When does de become du or des?

Whenever the owner takes le or les. De plus le gives du, as in le prix du billet, and de plus les gives des, as in le prix des billets. Feminine la and the elided l' do not merge: de la maison, de l'école.

How do I say it's mine in French?

Use être à with a stressed pronoun: c'est à moi, or il est à moi if you are referring back to a masculine noun. De does not work here, because être de means to come from. For whose is it, ask à qui est-ce.

Should I use de or a possessive adjective like son?

Use son, sa, or ses once the owner is obvious from the conversation. Use de when you need to name the owner, when son would be ambiguous between his and her, or when the thing owned carries an indefinite article, as in un ami de mon père.

French grammar · Beginner

Possessive De in French: How to Say Whose Something Is

Written by Camille Laurent, Lead French Curriculum Editor · Reviewed May 2026

French has no apostrophe-s, so possession is built with de: the thing owned comes first, then de, then the owner. De merges with a following article to give du, de la, de l', and des, and for a pronoun owner French switches to être à instead.

C'est la voiture de mon frère.

That's my brother's car.

What it is

English marks the owner with an ending, Marie's book. French has no such ending, so it uses a preposition instead and reverses the order: le livre de Marie, the book of Marie. Everything else about French possession follows from that single reversal, including which article you end up with.

le livre de Marie, la clé du bureau, la chambre des enfants — Marie's book, the office key, the children's room

How to spot it

Translate the English backwards. Start with the thing owned, add de, then name the owner, and let de merge with whatever article the owner needs.

le sac de Julie — Julie's bag (a name takes no article)
la porte du garage — the garage door (de + le → du)
le toit de la maison — the roof of the house
les jouets des enfants — the children's toys (de + les → des)

De never merges with a person's name, so de Marie and de Paul stay as two separate words.

Possessive De Quick Reference

Which form of de you end up with

The owner is…	Pattern	Example	English
a name	de + name	le vélo de Paul	Paul's bike
a masculine noun	du	la clé du bureau	the office key
a feminine noun	de la	le toit de la maison	the roof of the house
a noun starting with a vowel	de l'	le bureau de l'avocat	the lawyer's office
a plural noun	des	la chambre des enfants	the children's room
a pronoun	être à + stressed pronoun	Ce livre est à moi.	This book is mine.
a family, as a surname	de + les → des	la maison des Dupont	the Duponts' house

Common Possessive De Examples in French

Possessive de across the situations it covers:

People's Belongings

la voiture de mon père: my father's car
l'appartement de mes grands-parents: my grandparents' flat
les lunettes du professeur: the teacher's glasses
le portefeuille de la cliente: the customer's wallet

The owner can itself be a whole phrase, and de simply sits in front of the lot.

Parts and Contents

la couverture du livre: the cover of the book
le prix des billets: the price of the tickets
la fin de l'histoire: the end of the story
le centre de la ville: the centre of town

English often prefers of here rather than an apostrophe, but French uses exactly the same de.

Relationships

la sœur de Marc: Marc's sister
un collègue de ma mère: a colleague of my mother's
le mari de la voisine: the neighbour's husband
les amis des enfants: the children's friends

Un collègue de ma mère handles the English double possessive a colleague of my mother's in one step.

Ownership With Être À

À qui est cette veste ?: Whose jacket is this?
Elle est à moi.: It's mine.
Ces clés sont à nous.: These keys are ours.
Le chien est à mes voisins.: The dog belongs to my neighbours.

When the sentence is about who owns something rather than which thing it is, French switches from de to à.

How Possessive De Works

Four habits account for nearly every possessive phrase in French, and the awkward ones are all article problems rather than de problems.

The Order Is the Reverse of English

English puts the owner first and the thing second. French puts the thing first and the owner second, joined by de. Getting this the right way round is more than half the work.

C'est le chien de ma sœur.

That's my sister's dog.

Thing + de + owner.

De Merges With the Article

If the owner needs le or les, de swallows it: de + le becomes du and de + les becomes des. La and l' survive intact, giving de la and de l'. Writing de le is never correct.

Voici le bureau du directeur et celui de la secrétaire.

Here's the manager's office and the secretary's.

du, de la, de l', des.

Names Stand Bare

A personal name carries no article, so nothing merges with de. Le vélo de Paul, les idées de Camille. Surnames used of a whole family do take les, which is why la maison des Dupont has des.

Ce sont les cousins de Camille.

They're Camille's cousins.

de + name, no article.

French Will Not Stack Two Nouns

English can put one noun in front of another and let the reader work out the relationship: bus stop, coffee cup, French teacher. French has no such construction and inserts de every time.

Je t'attends à l'arrêt de bus.

I'll wait for you at the bus stop.

No noun stacks: always de.

Pronoun Owners Take À, Not De

To say something is mine or theirs, French uses être à with a stressed pronoun. De moi and de lui do not express ownership; they mean from me and about him.

Ce n'est pas mon manteau, il est à elle.

That's not my coat, it's hers.

Belongs to → être à.

Common Mistakes with Possessive De

Incorrect: C'est Marie livre. — It's Marie's book.

Correct: C'est le livre de Marie. — It's Marie's book.

French has no possessive ending and no way to put the owner in front of the thing. The order has to flip and de has to appear.

Incorrect: la voiture de le voisin — the neighbour's car

Correct: la voiture du voisin — the neighbour's car

De and le cannot sit side by side. They contract to du, in the same way de and les contract to des.

Incorrect: Ce stylo est de moi. — This pen is mine.

Correct: Ce stylo est à moi. — This pen is mine.

Être de means to be from, so ce stylo est de moi sounds like the pen originated with you. Ownership after être takes à.

Incorrect: Je t'attends à l'arrêt bus. — I'll wait for you at the bus stop.

Correct: Je t'attends à l'arrêt de bus. — I'll wait for you at the bus stop.

English can put bus straight in front of stop. French cannot leave two nouns touching, so de has to link them even where nothing is being possessed.

The Other Jobs De Does

The same word handles ownership, noun-linking, and relative clauses, and it helps to see the three side by side.

Être à for belonging

When ownership is the point of the sentence rather than a label on a noun, French uses être à plus a name or a stressed pronoun.

À qui est ce sac ?: Whose bag is this?
Il est à moi.: It's mine.
Cette place est à elle.: That seat is hers.
Ces vélos sont à nos voisins.: These bikes belong to our neighbours.

Appartenir à is the more formal option: ce sac appartient à Marie.

De linking two nouns

Where English puts one noun in front of another, French joins them with de and usually drops the article on the second.

un arrêt de bus: a bus stop
une salle de bains: a bathroom
un professeur de français: a French teacher
une tasse de café: a cup of coffee

Compare une tasse à café, a coffee cup, where à marks what the object is for rather than what is in it.

Possession inside a relative clause

When the owner is the word the clause hangs on, de turns into the relative pronoun dont.

l'homme dont la fille est médecin: the man whose daughter is a doctor
un roman dont j'ai oublié le titre: a novel whose title I've forgotten
une ville dont les rues sont étroites: a town whose streets are narrow

Note the word order: dont is followed by the article, not by a possessive. Dont sa fille is wrong.

Possessive De FAQs

How do you show possession in French?: Name the thing, add de, then name the owner: le sac de Julie, Julie's bag. If the owner needs an article, de merges with it, so you get la clé du bureau and la chambre des enfants. There is no French equivalent of the apostrophe.
Why is it le livre de Marie and not Marie de livre?: Because the order is the reverse of English. The possessed thing always comes first and de introduces the owner, so read the French as the book of Marie. Reversing the two nouns changes who owns what.
When does de become du or des?: Whenever the owner takes le or les. De plus le gives du, as in le prix du billet, and de plus les gives des, as in le prix des billets. Feminine la and the elided l' do not merge: de la maison, de l'école.
How do I say it's mine in French?: Use être à with a stressed pronoun: c'est à moi, or il est à moi if you are referring back to a masculine noun. De does not work here, because être de means to come from. For whose is it, ask à qui est-ce.
Should I use de or a possessive adjective like son?: Use son, sa, or ses once the owner is obvious from the conversation. Use de when you need to name the owner, when son would be ambiguous between his and her, or when the thing owned carries an indefinite article, as in un ami de mon père.