Have you ever stopped while writing an email, essay, job application, or message and wondered whether to write “who to contact” or “whom to contact”? You’re not alone. Many native and non-native English speakers struggle with this grammar point because both forms seem correct in different situations.
The confusion comes from the fact that who and whom are related pronouns, but they serve different grammatical functions. While modern English often favors who, especially in casual conversation, whom still appears in formal writing, professional communication, academic contexts, and standardized exams.
Understanding the difference can help you write more accurately, sound more professional, and avoid common grammar mistakes. In this guide, you’ll learn exactly when to use who and whom, see easy grammar rules, compare examples, and discover simple tricks that make choosing the correct word much easier.
Understanding the Meaning of Who and Whom
Both who and whom refer to people. However, they perform different jobs in a sentence.
- Who acts as a subject.
- Whom acts as an object.
Think of it this way:
- The subject performs the action.
- The object receives the action.
Examples
Who as a subject
- Who called you yesterday?
- Who wrote this report?
- Who is responsible for the project?
In each sentence, who performs the action.
Whom as an object
- Whom did you call yesterday?
- Whom did the manager hire?
- To whom should I send the email?
In these examples, whom receives the action.
Understanding this basic distinction is the key to choosing between who to contact and whom to contact.
Who to Contact or Whom to Contact: Which Is Correct?
The short answer is:
“Whom to contact” is grammatically correct in traditional English because whom functions as the object of the verb contact.
Grammar Breakdown
Consider the phrase:
- Whom should I contact?
In this sentence:
- I = subject
- should contact = verb
- whom = object
Since the person is receiving the action of being contacted, traditional grammar requires whom.
Correct Example
✅ Whom should I contact for technical support?
Informal Modern Usage
Today, many native speakers say:
✅ Who should I contact for technical support?
Although technically less formal, it is widely accepted in everyday English.
Quick Comparison
| Expression | Grammar Status | Common Usage |
| Whom to contact | Traditionally correct | Formal writing |
| Who to contact | Commonly accepted | Everyday English |
| Who should I contact? | Very common | Spoken English |
| Whom should I contact? | Most formal | Academic and professional writing |
In modern communication, both forms are often understood and accepted, but formal grammar still favors whom in object positions.
The Simple Grammar Rule You Can Use Every Time
One of the easiest ways to decide between who and whom is the he/him test.
The He/Him Test
Replace the word with he or him.
- If he sounds correct, use who.
- If him sounds correct, use whom.
Example 1
Who is calling?
Test:
- He is calling. ✅
- Him is calling. ❌
Answer:
✅ Who is calling?
Example 2
Whom should I contact?
Test:
- I should contact him. ✅
- I should contact he. ❌
Answer:
✅ Whom should I contact?
Comparison Table
| Test Word | Pronoun to Use |
| He | Who |
| She | Who |
| They | Who |
| Him | Whom |
| Her | Whom |
| Them | Whom |
This simple trick works in most situations and is especially useful during exams or professional writing.
Why Many People Use “Who” Instead of “Whom”
If whom is technically correct in many cases, why do so many people use who?
The answer is language evolution.
Over time, English has become less strict about maintaining object forms in everyday speech. As a result, whom has become less common outside formal contexts.
Common Everyday Examples
People often say:
- Who did you call?
- Who should I ask?
- Who are you talking to?
- Who do I contact?
Traditional grammar would recommend:
- Whom did you call?
- Whom should I ask?
- Whom are you talking to?
- Whom do I contact?
However, the versions using who sound natural to most modern speakers.
Formal vs Informal Usage
| Situation | Preferred Choice |
| Casual conversation | Who |
| Text messages | Who |
| Social media | Who |
| Business reports | Whom |
| Academic writing | Whom |
| Formal letters | Whom |
Knowing your audience helps determine which form sounds most appropriate.
Sentence Examples: Correct and Incorrect Usage
Examples are one of the best ways to master this grammar point.
Correct Usage of Who
✅ Who is at the door?
✅ Who wrote this article?
✅ Who wants to volunteer?
✅ Who made this decision?
Incorrect Usage of Who
❌ Who should I send the package to? (Formal grammar)
More formal:
✅ Whom should I send the package to?
or
✅ To whom should I send the package?
Correct Usage of Whom
✅ Whom did you invite?
✅ Whom are they interviewing?
✅ To whom does this office belong?
✅ Whom should we contact?
Incorrect Usage of Whom
❌ Whom is coming to dinner?
Because the person is performing the action.
Correct:
✅ Who is coming to dinner?
Side-by-Side Comparison
| Correct | Incorrect |
| Who called you? | Whom called you? |
| Who is responsible? | Whom is responsible? |
| Whom did you call? | Who did you call? (formal grammar) |
| Whom should I contact? | Who should I contact? (less formal) |
These examples help reinforce the subject-versus-object rule.
Common Phrases Using Who and Whom
Many learners encounter who and whom in fixed expressions.
Common Phrases With Who
- Who knows?
- Who is there?
- Who said that?
- Who wants coffee?
- Who can help me?
Common Phrases With Whom
- To whom it may concern
- For whom the bell tolls
- Whom should I contact?
- With whom are you speaking?
- To whom should I report?
Professional Examples
In workplace communication, you might see:
- Whom should I contact regarding billing?
- To whom should the application be submitted?
- Whom do I notify about the issue?
These phrases remain common in business and administrative writing.
British vs American English Usage
The difference between who and whom exists in both British and American English, but actual usage patterns vary slightly.
American English
American English increasingly favors who in everyday communication.
Examples:
- Who should I contact?
- Who did you invite?
- Who are you talking to?
These are common and usually accepted.
British English
British English tends to preserve whom slightly more often in formal contexts.
Examples:
- Whom should I contact?
- To whom should the letter be addressed?
- Whom do you represent?
However, modern British speakers also frequently use who in conversation.
Comparison Table
| Context | American English | British English |
| Casual speech | Who | Who |
| Business email | Who or Whom | Often Whom |
| Academic writing | Whom | Whom |
| Formal letters | Whom | Whom |
The difference is generally more about formality than regional variation.
Pronunciation of Who and Whom
Pronunciation can also contribute to confusion because the words sound somewhat similar.
Who
Pronunciation:
/huː/
Sounds like:
- hoo
Examples:
- Who are you?
- Who called?
Whom
Pronunciation:
/huːm/
Sounds like:
- hoom
Examples:
- Whom did you call?
- Whom should I contact?
Pronunciation Comparison
| Word | IPA | Simple Pronunciation |
| Who | /huː/ | hoo |
| Whom | /huːm/ | hoom |
Although pronunciation differs slightly, the main distinction remains grammatical rather than phonetic.
Common Mistakes and How to Avoid Them
Many learners either overuse whom or avoid it completely.
Mistake 1: Using Whom as a Subject
❌ Whom is attending the meeting?
Correct:
✅ Who is attending the meeting?
Mistake 2: Using Who in Very Formal Object Positions
❌ Who should the report be sent to?
More formal:
✅ Whom should the report be sent to?
Mistake 3: Using Whom Everywhere to Sound Formal
❌ Whom is speaking?
Correct:
✅ Who is speaking?
Mistake 4: Forgetting the He/Him Test
Whenever you’re unsure, try substitution:
- He → who
- Him → whom
Quick Memory Tips
Remember:
- Who = he
- Whom = him
Or think:
- Who does the action
- Whom receives the action
These shortcuts make the choice much easier.
FAQs
Is “who to contact” wrong?
No. In modern English, who to contact is widely used and generally accepted in everyday communication. However, traditional grammar considers whom to contact more precise because the pronoun functions as an object.
Which sounds more professional?
In formal business writing, whom to contact often sounds more polished and grammatically accurate.
Example:
✅ For assistance, please see whom to contact below.
Do native speakers still use “whom”?
Yes, but mainly in formal situations, legal documents, academic writing, official correspondence, and certain fixed expressions.
Is “who should I contact?” acceptable?
Absolutely. This is the version most native speakers use in everyday speech.
What about “To whom it may concern”?
This remains the standard and correct formal phrase.
Using who here would sound unusual.
Will using “who” instead of “whom” be considered a mistake?
In casual communication, usually not. Most readers will not notice. In highly formal writing, however, using whom correctly can demonstrate stronger grammar skills.
Conclusion
The distinction between who to contact and whom to contact comes down to one simple grammar rule: who functions as a subject, while whom functions as an object.
From a traditional grammar perspective, “whom to contact” is the technically correct form because the person being referred to receives the action of the verb contact. However, modern English increasingly accepts “who to contact,” especially in everyday conversation, emails, and informal writing.
To remember the difference confidently:
- Use who when you could replace it with he, she, or they.
- Use whom when you could replace it with him, her, or them.
- In formal writing, prefer whom to contact.
- In casual communication, who to contact is usually acceptable and natural.
By understanding this simple rule and practicing with real examples, you’ll be able to choose the correct form with confidence and improve the clarity, professionalism, and accuracy of your English writing.
