Who’s vs. Whose: What’s the Difference?
Learn who’s vs. whose using a quick replacement test, clear question patterns, examples, a quiz, and FAQs.
Who’s is a contraction of who is or who has. Whose asks about or identifies possession. If who is or who has fits the sentence, use who’s; otherwise, possession usually requires whose.
At 9:10 a.m., a calendar invite asks, “Whose presenting today?” The sentence is about a person, but not possession. Expanding the words reveals the answer immediately.
Who’s vs. Whose at a glance
| Word | Typical role | Meaning | Example |
|---|---|---|---|
| who’s | Contraction | a shortened form of who is or who has | Who’s presenting the results today? |
| whose | Possessive word | belonging to which person or associated with whom | Whose presentation is scheduled first? |
How to use who’s
The apostrophe replaces letters. Test it by expanding the contraction: Who is presenting?
Who’s presenting the results today?
How to use whose
Whose can modify a noun or stand alone: Whose file is this? Whose is this?
Whose presentation is scheduled first?
Rules that make the choice easier
Expand who’s
If who is or who has makes sense, choose who’s: “Who’s ready?” and “Who’s finished the report?”
Look for ownership or association
Choose whose when asking about a person connected to something: whose keys, whose decision, whose turn.
Use whose for people and sometimes things
Whose traditionally refers to people, but it can also connect things in natural modern English: “a company whose products are trusted.”
Common mistakes to avoid
- Incorrect: Whose coming with us? Correct: Who’s coming with us?
- Incorrect: Who’s laptop is this? Correct: Whose laptop is this?
- Do not assume an apostrophe marks possession here; who’s is only a contraction.
Quick practice
1. ___ responsible for the final edit?
Answer: Who’s
2. ___ notes are on the table?
Answer: Whose
3. ___ already seen the draft?
Answer: Who’s (who has)
Frequently asked questions
What is the difference between who’s and whose?
Who’s means who is or who has. Whose shows or asks about possession.
Is it who’s idea or whose idea?
Whose idea is correct because the question asks who the idea belongs to.
Can whose refer to a company or object?
Yes. Whose can naturally introduce a possessive relationship for people, organizations, animals, and things.
How do I test who’s?
Replace who’s with who is or who has. If the sentence works, the contraction is correct.