Which should you use, who’s or whose? Who’s is the contraction of who
is or who has. Whose can function as an
interrogative pronoun, an interrogative determiner, or a relative determiner. Whose can refer to both people and things.
| Incorrect: |
Who’s book is this? |
| Correct: |
Whose book is this? |
| Incorrect: |
We can deliver a better product
who’s price is cheaper. |
| Correct: |
We can deliver a better product
whose price is cheaper. |
