Who or Whom: Which Is Correct? Difference

Choosing between who and whom can be confusing because both words refer to people, but they serve different grammatical purposes. The main difference is that who functions as a subject, while whom functions as an object. Understanding their roles in a sentence makes it easier to use them correctly in everyday English, academic writing, and professional communication.

What Is the Difference Between Who and Whom?

The difference between who and whom depends on how each word functions in a sentence.

• Who is a subject pronoun. It refers to the person performing an action or the subject of a sentence.
• Whom is an object pronoun. It refers to the person receiving an action or following a preposition.

The easiest way to remember the distinction is to compare who with he or she, and whom with him or her.

Word	Grammatical role	Example
Who	Subject pronoun	Who called you?
Whom	Object pronoun	Whom did you call?

For example:

• Who invited Sarah? The word who is the subject because it identifies the person performing the action of inviting.
• Whom did Sarah invite? The word whom is the object because it identifies the person receiving the invitation.

Both words are correct, but they cannot always be used interchangeably in formal grammar.

What Does Who Mean?

Who is an interrogative pronoun or relative pronoun used to ask about or identify a person acting as the subject of a clause.

It is generally used when referring to the person performing an action.

Examples of Who in Sentences:

1. Who is coming to the party tonight?
2. Who prepared this delicious meal?
3. Who is responsible for this project?
4. Who wants to join our team?
5. Who told you the news?
6. The woman who lives next door is a teacher.
7. I know someone who can help you.
8. Who won the competition?

In these examples, who identifies the person performing an action or serving as the subject.

What Does Whom Mean?

Whom is an interrogative pronoun or relative pronoun used to refer to a person who receives an action or acts as the object of a verb or preposition.

It is generally used when asking about the person affected by an action.

Examples of Whom in Sentences:

1. Whom did you invite to the wedding?
2. To whom should I send this email?
3. Whom are you waiting for?
4. With whom did you travel?
5. Whom did the manager select?
6. The person whom I met yesterday was friendly.
7. For whom are you buying this gift?
8. Whom do you trust the most?

In these examples, whom identifies the person receiving an action or serving as the object of a preposition.

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Who vs. Whom: The Simple He or Him Rule

One of the easiest ways to determine whether to use who or whom is to replace the word with he/she or him/her.

Follow these steps:

1. Replace the word with he or she.
2. If the sentence sounds correct, use who.
3. Replace the word with him or her.
4. If the sentence sounds correct, use whom.

Examples:

Sentence	Pronoun test	Correct word
Who called you?	He called you.	Who
Whom did you call?	You called him.	Whom
Who is speaking?	She is speaking.	Who
To whom did you speak?	You spoke to her.	Whom
Who helped the students?	He helped them.	Who
Whom did the teacher help?	The teacher helped him.	Whom

This method works because who corresponds to subject pronouns such as he and she, while whom corresponds to object pronouns such as him and her.

When to Use Who

Use who when referring to the person performing an action or serving as the subject of a clause.

Here are the most common situations.

1. When Asking Who Performs an Action

Use who when asking about the person responsible for doing something.

Examples:

• Who opened the door?
• Who made this decision?
• Who teaches English at your school?
• Who sent you this message?
• Who broke the window?

2. When Introducing a Relative Clause

Use who to provide additional information about a person.

Examples:

• The boy who won the race is my brother.
• I have a friend who lives in London.
• She is the teacher who helped me.
• The employee who arrived early received an award.

3. In Indirect Questions

Use who when the person being identified is the subject of the indirect question.

Examples:

• I wonder who called me.
• Can you tell me who prepared dinner?
• She asked who was responsible.
• I don’t know who took my notebook.

When to Use Whom

Use whom when referring to a person who receives an action or follows a preposition in formal English.

Here are the most common situations.

1. When Someone Receives an Action

Use whom when the person is the object of a verb.

Examples:

• Whom did you invite?
• Whom did the company hire?
• Whom are you helping?
• Whom did they choose for the position?

2. After Prepositions

Use whom after prepositions such as to, for, with, by, from, and about.

Examples:

• To whom should I address this letter?
• With whom are you traveling?
• For whom did you buy this present?
• About whom were they talking?
• From whom did you receive this information?

3. In Formal Writing

Use whom in formal documents, professional correspondence, and academic writing when the pronoun functions as an object.

Examples:

• The candidate whom we selected has excellent qualifications.
• The professor to whom I submitted my assignment was helpful.
• The client with whom we worked was satisfied.
• The individual whom you contacted will respond shortly.

Can You Use Who Instead of Whom?

Yes. In modern conversational English, who is commonly used instead of whom when it functions as an object.

Although whom remains grammatically appropriate in formal writing, many English speakers prefer who in everyday conversations.

Compare these examples:

More formal	More conversational
Whom did you meet?	Who did you meet?
To whom are you speaking?	Who are you speaking to?
With whom did you travel?	Who did you travel with?
Whom did she invite?	Who did she invite?

Both versions are widely understood, but the whom versions follow traditional formal grammar.

Important: Do not use who as a replacement for whom in every situation. When a preposition directly comes before the pronoun, traditional formal English requires whom.

For example:

• Correct: To whom should I speak?
• Incorrect in formal grammar: To who should I speak?

Common Mistakes When Using Who and Whom

Understanding common mistakes can help you avoid confusing these two pronouns.

Incorrect usage	Correct usage	Explanation
Whom is coming today?	Who is coming today?	The pronoun is the subject.
Who did you invite?	Whom did you invite?	Whom is preferred in formal grammar.
To who should I write?	To whom should I write?	Use whom after a preposition in formal English.
Whom wants to participate?	Who wants to participate?	The person performs the action.
Who did the manager select?	Whom did the manager select?	Whom is the object in formal grammar.

A useful way to avoid these mistakes is to identify the subject and object before choosing the pronoun.

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Who and Whom in Everyday English

In everyday communication, who is much more common than whom. People frequently use who in conversations, text messages, emails, and informal writing, even when traditional grammar would recommend whom.

However, whom is still useful in situations where formal language is expected.

Consider these examples:

• Casual: Who are you talking to?
• Formal: To whom are you speaking?
• Casual: Who did you invite?
• Formal: Whom did you invite?
• Casual: Who are you waiting for?
• Formal: For whom are you waiting?

You do not need to use whom in every conversation to communicate correctly. Choose the form that suits your audience and the level of formality.

Who vs. Whom: Practice Examples

Test your understanding by choosing the correct word in each sentence.

1. _____ is your best friend?
2. _____ did you call yesterday?
3. To _____ should I send the documents?
4. The woman _____ helped me was very kind.
5. _____ are you waiting for?
6. _____ wants to join the meeting?
7. With _____ did you attend the event?
8. The person _____ I contacted was helpful.
9. _____ prepared this report?
10. _____ did the teacher praise?

Answers:

1. Who
2. Whom (formal), who (common conversational usage)
3. Whom
4. Who
5. Whom (formal), who (common conversational usage)
6. Who
7. Whom
8. Whom (formal), who (common conversational usage)
9. Who
10. Whom (formal), who (common conversational usage)

The key is to identify whether the pronoun acts as the subject or object of the relevant verb or preposition.

Summary: Who or Whom

The difference between who and whom comes down to their grammatical roles. Both pronouns refer to people, but they are traditionally used differently.

• Who is a subject pronoun used for the person performing an action.
• Whom is an object pronoun used for the person receiving an action or following a preposition.
• Use the he/she test to identify who.
• Use the him/her test to identify whom.
• In everyday English, who is commonly used instead of whom in object positions.
• In formal writing, whom is preferred when it functions as an object, especially after prepositions.

Remembering the simple difference between subject and object pronouns will help you use both words confidently in speaking and writing.

Frequently Asked Questions

1. What is the main difference between who and whom?

The main difference is grammatical function. Who is traditionally used as a subject pronoun, while whom is used as an object pronoun. For example, “Who called you?” and “Whom did you call?”

2. Is it who or whom did you meet?

In traditional formal grammar, whom did you meet? is preferred because the pronoun is the object of the verb meet. However, “Who did you meet?” is perfectly natural in everyday English.

3. Is it who or whom is coming?

Who is coming? is correct because who is the subject performing the action of coming. You should not use whom as the subject of this sentence.

4. Is whom more formal than who?

Yes. Whom is generally considered more formal and is more common in academic writing, professional documents, and formal communication. Who is more common in everyday conversations.

5. Can I use who instead of whom?

Yes. In modern conversational English, who commonly replaces whom when referring to the object of a verb or preposition placed at the end of a sentence. However, whom remains preferable in traditional formal grammar.

6. Should I use who or whom after a preposition?

Use whom when a preposition directly precedes the pronoun in formal English.

Examples:

• To whom should I speak?
• With whom are you working?
• For whom is this gift?

7. How do I remember when to use who or whom?

Remember the simple substitution rule:

• If you can replace the word with he or she, use who.
• If you can replace it with him or her, use whom.

For example, “Who called?” becomes “He called.” Therefore, who is correct.

8. Is whom grammatically correct in modern English?

Yes. Whom is still grammatically correct in modern English, particularly in formal writing. Although its use has become less common in everyday speech, it remains an important part of traditional English grammar.

9. Can whom be used in a question?

Yes. Whom can be used in questions when referring to the object of a verb or preposition.

Examples:

• Whom did you invite?
• Whom are you helping?
• To whom should I give this document?

10. Which is correct, who I met or whom I met?

Both forms are used in modern English. Whom I met is preferred in traditional formal grammar because the pronoun is the object of met. Who I met is common in informal communication.