Which should you use, who or whom? The interrogative pronoun who is used to ask about the subject of a sentence. When used with the linking verb be, who functions as the subject complement. The pronoun whom is used to ask about the object of a verb; whom is also used when it functions as the object a preposition.
| Incorrect: |
Whom are you? |
| Correct: |
Who are you? |
| Incorrect: |
Whom are your favourite characters? |
| Correct: |
Who are your favourite characters? |
| Incorrect: |
Who is calling who? |
| Correct: |
Who is calling whom? |
| Incorrect: |
Who is looking at who? |
| Correct: |
Who is looking at whom? |
