Topic Particle 은/는 in Korean

In Brief

Korean 은/는 marks what a sentence is about or sets one item against another. Use 은 after a word ending in a consonant and 는 after a word ending in a vowel: 책은 “as for the book,” but 저는 “as for me.” English usually leaves this relationship implicit, so a natural translation often omits “as for.”

Overview

A topic is the person, thing, time, or idea that the speaker chooses as the frame for what follows—in plain language, what the speaker wants to talk about. Korean marks that frame with the particle 은/는. A particle is a short grammatical form attached directly to another word. There is no space between that word and 은 or 는.

This is an essential A1 pattern. You meet it immediately in introductions such as 저는 민수예요 (“I’m Minsu”), questions such as 이것은 뭐예요? (“What is this?”), and broad statements such as 고양이는 귀여워요 (“Cats are cute”). In English, word order and context do much of this work. Translating 은/는 as “as for” can reveal the structure, but repeating “as for” in every English translation sounds unnatural.

The same forms also create contrast: they suggest “this one, unlike something else” or “in this respect, though perhaps not in another.” This function explains why 은/는 cannot be reduced to a simple label for the subject. The topic and the grammatical subject—the person or thing described by the predicate—may coincide, but they do not have to.

How It Works

Choosing 은 or 는

Choose the form from the final sound of the word immediately before the particle, not from its spelling in English.

Final sound	Particle	Combination	Meaning
Consonant (받침)	은	책 + 은 → 책은	as for the book
Vowel (no 받침)	는	저 + 는 → 저는	as for me

A 받침 (batchim) is the consonant written at the bottom of a Korean syllable block. In 책, the final ㄱ is a 받침, so the result is 책은. In 학교, the last syllable 교 ends in a vowel, so the result is 학교는.

Word	Ending	Topic form
사람 (person)	consonant ㅁ	사람은
오늘 (today)	consonant ㄹ	오늘은
집 (home/house)	consonant ㅂ	집은
나 (I, informal)	vowel ㅏ	나는
친구 (friend)	vowel ㅜ	친구는
커피 (coffee)	vowel ㅣ	커피는

The particle is attached with no space: 오늘은, not 오늘 은.

Pattern 1: Establishing the topic

The basic pattern is:

topic + 은/는 + comment about that topic

In 저는 학생이에요, 저는 establishes “me” as the topic and 학생이에요 comments that the speaker is a student. English simply says “I’m a student.” Once a topic is clear, Korean often leaves it unspoken in later sentences:

저는 안나예요. 회사원이에요.
“I’m Anna. I’m an office worker.”

The second sentence needs no repeated 저는 because the topic remains obvious.

Pattern 2: General statements

은/는 commonly presents a class or category as the topic of a broad statement:

고양이는 귀여워요.
“Cats are cute.”

This does not necessarily point to one particular cat. It can describe cats in general. Similar examples include 겨울은 추워요 (“Winter is cold”) and 한국어는 재미있어요 (“Korean is interesting”). Context still matters: the same phrase can refer to a known specific item, so 그 고양이는 귀여워요 means “That cat is cute.”

Pattern 3: Contrast

When two things are compared, 은/는 highlights the contrast:

커피는 좋아하지만 차는 안 좋아해요.
“I like coffee, but I don’t like tea.”

The contrast can also be unstated. 오늘은 바빠요 means “I’m busy today,” but 은 may imply “today, unlike another day.” Likewise, 맛은 좋아요 means “The taste is good,” with a possible undertone such as “though something else about it is not.” Do not invent a dramatic contrast every time; sometimes 은/는 simply maintains the topic.

은/는 and 이/가: the beginner distinction

Both particles may follow a noun that English would place in subject position, but they organize information differently.

Particle	Beginner-friendly focus	Typical use
은/는	“As for X…”	established topic, comparison, contrast, general statement
이/가	“X is the one that…”	identifying the subject, presenting it as important or newly selected information

Compare:

• 민수는 왔어요. — “As for Minsu, he came.” The sentence continues or contrasts a discussion about Minsu.
• 민수가 왔어요. — “Minsu came.” This identifies Minsu as the person who came, for example in answer to 누가 왔어요? (“Who came?”).

A useful first rule is: answer a who/what is it? question with 이/가, because the answer supplies the requested identity. Use 은/는 to set the frame or compare alternatives. This is a guide, not a mechanical replacement rule; discourse and the speaker’s intended emphasis ultimately decide.

The topic and subject can appear together:

저는 한국어가 어려워요.
“As for me, Korean is difficult.” / “I find Korean difficult.”

Here 저는 is the topic, while 한국어가 is what is described as difficult. English reshapes the sentence, which is why translating one particle as “the subject marker” and the other as “the topic marker” is more reliable than matching each particle to a fixed English word.

Examples in Context

Korean	English	Note
저는 미국 사람이에요.	I am American.	저 ends in a vowel, so it takes 는.
제 이름은 수진이에요.	My name is Sujin.	이름 ends in ㅁ, so it takes 은.
이것은 뭐예요?	What is this?	Establishes “this” as the item being discussed.
오늘은 바빠요.	I’m busy today.	“Today” is the frame; contrast with another day is possible.
고양이는 귀여워요.	Cats are cute.	A general statement about cats.
한국어는 재미있어요.	Korean is interesting.	A subject of discussion or a general evaluation.
이 식당은 음식이 맛있어요.	This restaurant’s food is delicious.	The restaurant is the topic; the food is the subject.
저는 매운 음식이 좋아요.	I like spicy food.	Literally, spicy food is pleasing “as for me.”
누가 학생이에요? 지수가 학생이에요.	Who is a student? Jisu is the student.	이/가 identifies the answer to 누가.
지수는 학생이에요. 민호는 선생님이에요.	Jisu is a student. Minho is a teacher.	Parallel topics create a clear contrast.
커피는 마셔요. 차는 안 마셔요.	I drink coffee. I don’t drink tea.	Contrasts coffee and tea.
주말에는 집에서 쉬어요.	On weekends, I rest at home.	는 follows the time particle 에: 에는.
이 책은 읽었지만 저 책은 안 읽었어요.	I read this book, but I didn’t read that one.	Explicit contrast between two books.
맛은 좋아요.	The taste is good.	May imply a reservation about price, appearance, or something else.

Common Mistakes

Choosing by meaning instead of the final sound

• Wrong: 친구은 학생이에요.
• Right: 친구는 학생이에요.
• Why: 친구 ends in the vowel ㅜ, so it takes 는. The meaning of the noun does not affect the choice.

Adding a space before the particle

• Wrong: 오늘 은 바빠요.
• Right: 오늘은 바빠요.
• Why: Korean particles attach directly to the preceding word.

Treating 은/는 as an exact equivalent of English “is”

• Wrong: assuming 는 means “am” in 저는 학생이에요
• Right: understand 저는 as the topic and 학생이에요 as “am a student.”
• Why: 은/는 marks the topic; it is not a verb. The ending 이에요/예요 supplies “is/am/are” in this sentence.

Using 은/는 to answer 누가 without intending contrast

• Question: 누가 왔어요? (“Who came?”)
• Less natural as a neutral answer: 민수는 왔어요.
• Natural neutral answer: 민수가 왔어요.
• Why: The question asks for the identity of the person who came, so 이/가 normally marks the answer. 민수는 왔어요 can instead mean “Minsu came (but I am not saying the others did).”

Replacing every 이/가 with 은/는

• Wrong strategy: “If the noun is important, always use 은/는.”
• Better: 저는 날씨가 좋아서 걸어요. (“As for me, I walk because the weather is good.”)
• Why: A sentence can contain both a topic and a subject. The particles have different jobs and are not interchangeable decorations.

Forcing “as for” into every translation

• Awkward: “As for today, as for me, I am busy.”
• Natural: “I’m busy today.”
• Why: “As for” is a learning aid that exposes the Korean structure. Natural English usually expresses the same idea through context, stress, or word order.

Usage Notes

은/는 works after more than people and objects. Time expressions are especially common: 아침은 바빠요 (“Mornings are busy”) and 내일은 쉬어요 (“I’m off tomorrow”). A location or time particle may remain before 는, producing combinations such as 학교에서는 (“at school, by contrast”) and 주말에는 (“on weekends”). In these combinations, 는 adds a topic or contrast meaning to the relationship already marked by 에서 or 에.

In casual speech, common topic forms contract: 나는 → 난, 너는 → 넌, 이것은 → 이건, 그것은 → 그건, and 저것은 → 저건. The full forms are correct and useful for learning; the shorter forms are extremely common in conversation. Do not confuse 저는 (polite “I” + 는) with 전, its common spoken contraction.

Korean politeness does not come from 은/는 itself. The particle is neutral. Politeness is expressed elsewhere, especially in pronoun choice and sentence endings: 나는 학생이야 is informal, while 저는 학생이에요 is polite.

Beyond the Basics / Advanced Use

You do not need to master all of this at A1, but later you will notice that topic marking is a tool for managing an entire conversation, not merely a noun ending. A speaker may introduce one topic, omit it for several clauses, and then use 은/는 again to switch to a different frame. This is one reason natural particle choice depends on the sentences before it.

Contrastive 은/는 can attach where another marker might otherwise appear. Compare 사과를 먹었어요 (“I ate an apple”) with 사과는 먹었어요 (“I did eat the apple / As for the apple, I ate it”). In the second sentence, 는 replaces the object particle 를 and may imply “but not the other food” or “though something else did not happen.” With some particles, however, 는 is added rather than substituted, as in 에는 and 에서는.

Negative statements often make this contrast especially noticeable. 돈이 없어요 neutrally says “There is no money” or “I have no money.” 돈은 없어요 sets money apart: “I don’t have money, at least,” possibly leaving room for another positive fact. The implication comes from context, so it should not be translated identically every time.

Finally, “known information takes 은/는; new information takes 이/가” is only a tendency. Speakers can introduce a new topic with 은/는, and 이/가 can mark something already mentioned when it needs focus. At an advanced level, listen for what alternatives are being contrasted and what question—spoken or unspoken—the sentence answers.

Practice Tips

1. Train the sound choice. Take ten everyday nouns and say each with 은/는: 집은, 책은, 학교는, 커피는. Check only the final Korean sound.
2. Build contrast pairs. Make two balanced sentences, such as 월요일은 일해요. 화요일은 쉬어요 (“I work Monday. I rest Tuesday”). This makes the contrastive function easier to feel.
3. Compare real question-and-answer pairs. Practice 누가 왔어요? 민수가 왔어요 beside 민수는 왔어요. Ask what the sentence is doing: identifying the subject, continuing a topic, or contrasting alternatives.

Related Concepts

• Prerequisite: Subject Particles 이/가 — learn how Korean identifies and focuses the grammatical subject before comparing it with the topic.
• Later extension: Advanced Particles — explore particles such as 마저, 조차, 나마, 대로, and 만큼 for more precise shades of emphasis and relationship.