Let’s be honest. Few things in the English language cause as much eye-rolling and confusion as the words “who” and “whom.” Even people who love grammar sometimes hesitate when they reach for one of these words. Should it be “who” or “whom”? The answer feels like it requires a secret decoder ring.
The good news is that the rule is not as complicated as it seems. Once you understand a few basic ideas about how sentences are built, you will be able to choose the right word with confidence. And if you occasionally hear that “whom” is dying out, do not worry. We will talk about that too.
Let’s Start with the Basics of a Sentence
Before we dive into the words themselves, we need to look at how a simple sentence works. Every sentence has a few key pieces.
There is the subject. This is the person or thing doing the action. If someone is running, that someone is the subject.
There is the verb. This is the action itself. Run, jump, think, buy—these are all verbs.
Then there is the object. This is the person or thing receiving the action. If you throw a ball, the ball is the object. If you call your mother, your mother is the object.
In a basic English sentence, the order usually goes like this: subject first, then verb, then object.
Maria called her brother.
The team won the game.
My neighbor baked cookies.
Keep these three roles in mind—subject, verb, object—because they are the key to understanding who and whom.
The Role of “Who”
“Who” is a pronoun. That means it stands in for a person’s name. Specifically, “who” stands in for the subject of a sentence.
Think of it this way: if the person is doing the action, you use “who.”
Look at this book title: The Girl Who Kicked the Hornet’s Nest. The girl is doing the kicking. She is the subject. “Who” fits.
Here are some everyday examples:
Who wants ice cream? (The person doing the wanting is the subject.)
I wonder who left the door open. (The person doing the leaving is the subject.)
Who called me this morning? (The person doing the calling is the subject.)
Now, go back to our earlier simple sentences. If we turn them into questions using “who,” it looks like this:
Maria called her brother. → Who called her brother?
The team won the game. → Who won the game?
My neighbor baked cookies. → Who baked the cookies?
In every case, “who” replaces the person doing the action. That is the subject.
The Role of “Whom”
Now we get to the word that makes people nervous. “Whom” is also a pronoun, but it stands in for the object of a sentence. If the person is receiving the action, you use “whom.”
Ernest Hemingway gave us a famous example: For Whom the Bell Tolls. The bell is tolling for someone. That someone is the object of the preposition “for.” Hence, “whom.”
Here are some examples where “whom” is the right choice:
To whom should I address this letter? (You are addressing the letter to someone. That someone is the object.)
Whom did you invite to the party? (You invited someone. That someone is the object of the verb “invite.”)
The woman whom I met yesterday was very kind. (I met her. She is the object of the verb “met.”)
Let us go back to our simple sentences again. This time, we will ask questions that require “whom.”
Maria called her brother. → Whom did Maria call? (The brother received the action. He is the object.)
The team won the game. → Whom did the team beat? (If we add an opponent, that opponent is the object.)
My neighbor baked cookies. → Whom did my neighbor bake cookies for? (The person receiving the cookies is the object.)
See the difference? When the person is doing the acting, use “who.” When the person is receiving the action, use “whom.”
A Simple Trick That Always Works
If you are standing at your desk, staring at a sentence, and you cannot remember which word to use, there is a trick. It is not fancy, but it works every time.
Replace the word you are considering with either “he” or “him.” If “he” fits, use “who.” If “him” fits, use “whom.”
Here is why this works: “He” is a subject pronoun. “Him” is an object pronoun. The same logic applies to “who” and “whom.”
Try it on this question: “(Who/Whom) bought the tickets?”
Think of the answer. If the answer is “He bought the tickets,” then “he” fits. That means you want “who.”
Now try this one: “(Who/Whom) did you see at the store?”
Think of the answer. You would say, “I saw him.” “Him” fits. That means you want “whom.”
You can also use “she” and “her” the same way. But “he” and “him” have a nice ring to them that matches “who” and “whom,” which is why this trick is so popular.
What About Modern Usage?
Here is the truth. In casual conversation, people use “who” for almost everything. You will hear things like:
Who did you go with?
Who are you talking to?
Strictly speaking, these should be “with whom did you go” and “to whom are you talking.” But in everyday speech, that sounds stiff and formal to most people. Language evolves. What is considered “correct” shifts over time.
Many grammar experts admit that “whom” is fading from common use. In informal settings—text messages, conversations with friends, social media posts—using “who” in place of “whom” is widely accepted.
However, there is a catch. In formal writing, the rules still matter. If you are writing a cover letter, a academic paper, a news article, or anything where you want to sound professional, you should use “whom” correctly. Editors notice these things. Readers who know the difference will notice too.
A Note for Writers
If you are writing fiction, you have an additional consideration. Your characters should sound like real people. A teenager in a fast-food restaurant probably is not going to say, “To whom are you speaking?” They are going to say, “Who are you talking to?”
Dialogue should feel authentic. If a character uses perfect grammar all the time, they might come across as stiff or unnatural. Save “whom” for characters who are formal, educated, or perhaps a little stuffy. Use “who” for everyone else.
In your narrative voice, though, you have a choice. Some publications, like The New York Times, still observe the distinction carefully. Others are more relaxed. If you are writing for a specific outlet, check their style guide. If you are writing for yourself, decide which approach feels right and stick with it consistently.
Putting It All Together
Let’s end with a quick summary.
Use who when the person is the subject. They are doing the action.
Use whom when the person is the object. They are receiving the action.
If you are unsure, try the “he” versus “him” trick. “He” means use “who.” “Him” means use “whom.”
In casual conversation, using “who” for everything is common and generally accepted.
In formal writing, using “whom” correctly shows attention to detail and respect for the language.
The next time you stare at a sentence and feel that moment of doubt, remember these simple rules. You have got this. And if you slip up now and then, do not worry. Even native speakers stumble over this one. The important thing is to keep writing, keep learning, and keep getting better.