Possessive Pronouns: Mine, Yours, and the Rest

What possessive pronouns are

Possessive pronouns show ownership or belonging, and they stand alone without a noun following them. When you say "That car is mine," the word mine replaces my car. You do not need to repeat the noun because the pronoun does the work.

English has two sets of possessive forms. One set goes before nouns—these are called possessive determiners (or possessive adjectives): my, your, his, her, its, our, their. The other set stands alone and replaces the noun entirely—these are the possessive pronouns: mine, yours, his, hers, —, ours, theirs.

Notice that its does not have a pronoun partner that stands alone. We do not say "That toy is its." Also, his works both ways: it can come before a noun (his book) or stand alone (The book is his).

Here is the full table:

Person	Possessive Determiner	Possessive Pronoun
I	my	mine
you (singular)	your	yours
he	his	his
she	her	hers
it	its	(not used alone)
we	our	ours
you (plural)	your	yours
they	their	theirs

Possessive determiners vs possessive pronouns

The key difference is simple: possessive determiners must be followed by a noun, while possessive pronouns stand alone.

✓ This is my pen.
✓ This pen is mine.

✗ This is mine pen.
✗ This pen is my.

When you use my, your, his, her, its, our, their, a noun must come after. When you use mine, yours, his, hers, ours, theirs, the noun is already replaced—you stop there.

Compare these pairs:

Your jacket is on the chair. Mine is in the closet.

Your needs jacket. Mine stands alone; it means my jacket.

Their dog is friendly. Ours is shy.

Their comes before dog. Ours replaces our dog.

No apostrophes in possessive pronouns

This rule surprises many learners: possessive pronouns never take an apostrophe.

✗ That book is your's.
✓ That book is yours.

✗ The choice is her's.
✓ The choice is hers.

✗ The victory is our's.
✓ The victory is ours.

✗ Those keys are their's.
✓ Those keys are theirs.

You may see apostrophes with possessive nouns (John's car, the company's policy), but possessive pronouns work differently. The forms yours, hers, ours, theirs are already possessive—they do not need an apostrophe to show ownership.

The special case: its vs it's

The possessive form of it is its, with no apostrophe. The form it's is a contraction that means it is or it has.

✓ The cat licked its paw. (possessive: the paw belongs to the cat)
✓ It's raining today. (contraction: it is raining)

✗ The cat licked it's paw.
✗ Its a beautiful day.

Many native speakers make this mistake, but the rule is firm. If you can replace the word with it is or it has, use it's. If you are showing possession, use its.

Using possessive pronouns after of

English allows a construction called the double possessive (or double genitive), where a possessive pronoun follows the word of.

He is a friend of mine.
That colleague of yours called.
A student of hers won the prize.

This pattern is common and natural. It does not mean a friend of my or a colleague of your. The possessive pronoun form is required after of in this construction.

✗ A friend of my called.
✓ A friend of mine called.

Why double? Because of already shows a relationship, and mine adds possession—hence the name. The construction is used when you want to indicate one item out of several that belong to someone. A friend of mine suggests you have multiple friends; this is one of them.

Whose as a possessive pronoun

Whose is the possessive form used in questions and relative clauses. It asks about ownership or identifies which person something belongs to.

In questions

Whose phone is ringing?
Whose turn is it?
Whose idea was that?

Whose can also stand alone as a pronoun:

Whose is this? (meaning: Whose item is this?)

In relative clauses

The writer whose book I read will speak tonight.
She is the student whose project won first place.

Do not confuse whose with who's. Who's is a contraction meaning who is or who has.

✓ Whose coat is this? (asking about ownership)
✗ Who's coat is this?

✓ Who's coming to dinner? (contraction: who is)
✗ Whose coming to dinner?

Common mistakes

Adding -s to possessive pronouns

Some learners say mines, hers, yours, theirs with an extra s sound, thinking it makes the word more possessive. The correct forms already end in s where needed.

✗ That pen is mines.
✓ That pen is mine.

✗ The red car is her's.
✓ The red car is hers.

Mixing up determiners and pronouns

Learners sometimes put a noun after a possessive pronoun or use a determiner without a noun.

✗ This is mine book.
✓ This is my book. or This book is mine.

✗ The answer is their.
✓ The answer is theirs. or It is their answer.

Using its with people

Its refers to things and animals when we do not specify gender, not to people. For people, use his, her, or their.

✗ The baby dropped its bottle. (acceptable if you are speaking generally, but many prefer his or her or their)
✓ The baby dropped their bottle. (singular they, now widely accepted)
✓ The baby dropped his bottle. or her bottle. (if gender is known)

For objects and animals without specified gender, its is standard:

✓ The company announced its new policy.
✓ The dog wagged its tail.

When to use possessive pronouns

Use a possessive pronoun when you want to avoid repeating a noun that is already clear from context.

A: Is this your umbrella?
B: No, mine is black. (instead of my umbrella is black)

Their house is large, but ours is cozy. (instead of our house is cozy)

Possessive pronouns make speech and writing less repetitive and more efficient. Once the noun is established, the pronoun keeps the conversation moving.

They are especially useful in comparisons:

My schedule is flexible, but yours is packed.
Her performance was good, but his was exceptional.

And in answers to questions:

A: Whose laptop is this?
B: It's mine.

Summary of forms

To avoid confusion, here is one more glance at all the possessive forms:

Before a noun (determiners):
my, your, his, her, its, our, their

Standing alone (pronouns):
mine, yours, his, hers, —, ours, theirs

Interrogative and relative (possessive question word):
whose

Remember:

• No apostrophes in possessive pronouns.
• Its = possessive; it's = it is.
• Whose = possessive question; who's = who is.
• Determiners need a noun; pronouns do not.

Once you internalize these patterns, possessive pronouns become automatic. Practice by replacing nouns in your own sentences, and soon you will reach for mine and yours without hesitation.