How to Say “I Am Not” in Korean: 이/가 아니에요

To say “I am not” in Korean, you cannot simply put 안 before a noun. Korean uses 이/가 아니에요 when the word you want to negate is a noun.

This form is used for negative noun sentences, especially when you are denying a person, object, place, name, role, or identity.

This lesson explains how 이/가 아니에요 works, how to choose the right form, and why Korean does not use 안 directly before nouns.

Quick Answer: How to Say “I Am Not” in Korean

To say “I am not” or “it is not” in Korean, use 이/가 아니에요 after a noun. This grammar is used when you want to say that someone or something is not a certain person, object, place, or identity.

Use 이 아니에요 after a noun that ends in a consonant sound. Use 가 아니에요 after a noun that ends in a vowel sound.

• 저는 학생이 아니에요.
  (I am not a student.)
• 저는 의사가 아니에요.
  (I am not a doctor.)

A simple way to remember it is this: Korean does not use 안 directly before nouns. When the word you want to negate is a noun, 이/가 아니에요 is usually the natural choice.

1. What Does 이/가 아니에요 Mean in Korean?

이/가 아니에요 is used when you want to say that a noun is not correct. The noun can be a thing, place, name, relationship, or identity.

This grammar does not describe an action. It does not describe a feeling either. It simply says that something is not a certain noun.

• 그건 제 핸드폰이 아니에요.
  (That is not my phone.)
• 여기는 도서관이 아니에요.
  (This place is not a library.)
• 민우 씨는 제 동생이 아니에요.
  (Minu is not my younger brother.)
• 제 이름은 유나가 아니에요.
  (My name is not Yuna.)

In English, all of these sentences use “not.” In Korean, the important point is the word before the negative part. If that word is a noun, 이/가 아니에요 is the form you need.

2. 이 아니에요 vs 가 아니에요: The Simple Rule

The choice between 이 아니에요 and 가 아니에요 depends on the final sound of the noun.

Use 이 아니에요 when the noun ends in a consonant sound. Use 가 아니에요 when the noun ends in a vowel sound.

이 아니에요 vs 가 아니에요 Rule Table

Noun Ending	Pattern	Example
Consonant ending	Noun + 이 아니에요	– 연필이 아니에요.(It is not a pencil.)
Vowel ending	Noun + 가 아니에요	– 카메라가 아니에요.(It is not a camera.)

Do not choose 이 or 가 from the English meaning. Look at the last sound of the Korean noun first. That small check will usually give you the right form.

3. Use 이 아니에요 After a Consonant Ending

Now look only at nouns that take 이 아니에요. Each noun below ends in a consonant sound, so the sentence uses 이 아니에요.

• 그건 제 가방이 아니에요.
  (That is not my bag.)
• 이건 물이 아니에요.
  (This is not water.)
• 여기는 제 집이 아니에요.
  (This is not my house.)
• 이건 생일 선물이 아니에요.
  (This is not a birthday gift.)
• 그건 가족사진이 아니에요.
  (That is not a family photo.)
• 이건 커피 컵이 아니에요.
  (This is not a coffee cup.)

Words like 가방, 물, 집, 선물, 사진, and 컵 all end in a consonant sound. That is why they are followed by 이 아니에요.

4. Use 가 아니에요 After a Vowel Ending

Now compare that with nouns that take 가 아니에요. Each noun below ends in a vowel sound, so the sentence uses 가 아니에요.

• 그건 제 모자가 아니에요.
  (That is not my hat.)
• 여기는 한국어 학교가 아니에요.
  (This place is not a Korean language school.)
• 이건 검은색 바지가 아니에요.
  (These are not black pants.)
• 지수 씨는 제 친구가 아니에요.
  (Jisu is not my friend.)
• 이건 제 카드가 아니에요.
  (This is not my card.)
• 이건 아이스커피가 아니에요.
  (This is not iced coffee.)

Words like 모자, 학교, 바지, 친구, 카드, and 아이스커피 end in a vowel sound. That is why they are followed by 가 아니에요.

5. 이/가 아니에요 vs 안: Why “안 + Noun” Sounds Wrong

English uses “not” in many different sentences. Korean does not use one negative form for everything.

If the word you want to negate is a noun, use 이/가 아니에요. Do not put 안 directly before the noun.

Korean “Not” Forms by Word Type

What You Negate	Korean Pattern	Example
Noun	Noun + 이/가 아니에요	– 저는 배우가 아니에요.(I am not an actor.)
Verb	안 + Verb	– 오늘은 안 와요.(I am not coming today.)
Adjective	안 + Adjective	– 오늘은 안 추워요.(It is not cold today.)

The problem usually starts with English. English uses “not” for nouns, verbs, and adjectives, but Korean does not use one negative form for all of them. Before choosing the Korean negative form, first check what kind of word you are negating.

• 저는 안 가수예요. ❌
  (Wrong: Korean does not use 안 directly before a noun like this.)
• 저는 가수가 아니에요. ⭕
  (I am not a singer.)

Use 안 with verbs and adjectives. Use 이/가 아니에요 when you are saying that a noun is not true.

This is why 안 needs its own lesson. It works well with verbs and adjectives, but not directly before nouns.
👉 Read more: How Native Koreans Use 안: The Most Common Negative Form

6. 아니에요 vs 아니요: What Is the Difference?

아니요 means “no.” 아니에요 means “it is not” or “I am not.” They look similar, but 아니요 answers a question, while 아니에요 explains that something is not true.

아니에요 vs 아니요 Comparison Table

Korean	Meaning	Common Use	Example
아니요	No	Answering “no”	– 아니요, 괜찮아요.(No, it is okay.)
아니에요	It is not / I am not	Ending a negative noun sentence	– 이건 제 우산이 아니에요.(This is not my umbrella.)

You can use both together when you answer “no” and then explain the noun more clearly.

• A: 이거 제인 씨 우산이에요?
  (Is this Jane’s umbrella?)
• B: 아니요, 제인 씨 우산이 아니에요.
  (No, it is not Jane’s umbrella.)

아니에요 is easier to understand when you already know how Korean noun sentences work. For the positive form, review this related lesson:

👉 이에요/예요 Grammar: The Rule Native Speakers Automatically Follow

7. 아니에요 vs 아니예요: The Correct Spelling

The correct spelling is 아니에요, not 아니예요. In Korean grammar, 아니에요 comes from 아니다 + -에요, so 예요 is not the right form here.

Many learners write 아니예요 because 예요 looks familiar from 이에요/예요. But with 아니다, the correct polite form is 아니에요.

For beginner learners, it is safest to remember this as one fixed form: 아니에요.

• 제 이름은 민아가 아니에요. ⭕
  (My name is not Mina.)
• 제 이름은 민아가 아니예요. ❌
  (This spelling is incorrect.)
• 저는 작가가 아니에요. ⭕
  (I am not a writer.)
• 저는 작가가 아니예요. ❌
  (This spelling is incorrect.)

You may hear shorter spoken forms in real conversation, but for writing and beginner Korean, use 아니에요.

8. Common Confusions About 이/가 아니에요 Grammar

이/가 아니에요 looks simple, but beginners often get confused because English uses “not” in many different ways. Korean does not choose the negative form from the English word “not.” It looks at the word type and the final sound of the noun.

Confusion 1: Translating English “not” too directly

This is the English-to-Korean translation trap.

• 저는 안 간호사예요. ❌
  (Wrong: 안 does not come directly before a noun.)
• 저는 간호사가 아니에요. ⭕
  (I am not a nurse.)

When the negative word is a noun, use 이/가 아니에요.

Confusion 2: Ignoring the final sound of the noun

Do not choose 이 or 가 from the English meaning. Look at the last Korean sound of the noun.

• 이건 제 달력가 아니에요. ❌
  (Wrong: 달력 ends in a consonant sound.)
• 이건 제 달력이 아니에요. ⭕
  (This is not my calendar.)
• 이건 지우개이 아니에요. ❌
  (Wrong: 지우개 ends in a vowel sound.)
• 이건 지우개가 아니에요. ⭕
  (This is not an eraser.)

Confusion 3: Writing 아니예요 instead of 아니에요

This is a spelling problem, not a meaning problem.

• 이 사람은 직원이 아니예요. ❌
  (This spelling is incorrect.)
• 이 사람은 직원이 아니에요. ⭕
  (This person is not an employee.)
  
  

9. Practice: Choose 이 아니에요 or 가 아니에요

Choose the correct form: 이 아니에요 or 가 아니에요.

Practice Table: 이 아니에요 vs 가 아니에요

No.	Korean Sentence	English Translation	Options
1	이건 제 열쇠___ 아니에요.	This is not my key.	이 / 가
2	이건 서울 지도___ 아니에요.	This is not a map of Seoul.	이 / 가
3	그건 제 이메일___ 아니에요.	That is not my email.	이 / 가
4	이건 공항 버스___ 아니에요.	This is not an airport bus.	이 / 가
5	여기는 호텔___ 아니에요.	This place is not a hotel.	이 / 가
6	이건 제 티켓___ 아니에요.	This is not my ticket.	이 / 가
7	이건 한국어 교재___ 아니에요.	This is not a Korean textbook.	이 / 가
8	여기는 공원___ 아니에요.	This place is not a park.	이 / 가
9	이건 영수증___ 아니에요.	This is not a receipt.	이 / 가
10	그건 제 주소___ 아니에요.	That is not my address.	이 / 가

Answers and Explanations

1. 가
   이건 제 열쇠가 아니에요.
   (This is not my key.)
   열쇠 ends in a vowel sound, so it takes 가 아니에요.
2. 가
   이건 서울 지도가 아니에요.
   (This is not a map of Seoul.)
   지도 ends in a vowel sound, so it takes 가 아니에요.
3. 이
   그건 제 이메일이 아니에요.
   (That is not my email.)
   이메일 ends in ㄹ, a consonant sound, so it takes 이 아니에요.
4. 가
   이건 공항 버스가 아니에요.
   (This is not an airport bus.)
   버스 ends in a vowel sound, so it takes 가 아니에요.
5. 이
   여기는 호텔이 아니에요.
   (This place is not a hotel.)
   호텔 ends in ㄹ, a consonant sound, so it takes 이 아니에요.
6. 이
   이건 제 티켓이 아니에요.
   (This is not my ticket.)
   티켓 ends in ㅅ, a consonant sound, so it takes 이 아니에요.
7. 가
   이건 한국어 교재가 아니에요.
   (This is not a Korean textbook.)
   교재 ends in a vowel sound, so it takes 가 아니에요.
8. 이
   여기는 공원이 아니에요.
   (This place is not a park.)
   공원 ends in ㄴ, a consonant sound, so it takes 이 아니에요.
9. 이
   이건 영수증이 아니에요.
   (This is not a receipt.)
   영수증 ends in ㅇ, a consonant sound, so it takes 이 아니에요.
10. 가
    그건 제 주소가 아니에요.
    (That is not my address.)
    주소 ends in a vowel sound, so it takes 가 아니에요.
    
    

10. FAQ About 이/가 아니에요 Grammar

Q1. What does 이/가 아니에요 mean in Korean?

이/가 아니에요 means “am not,” “is not,” or “are not” when the word being negated is a noun. Korean uses this pattern to deny a person, object, place, role, name, or identity in a polite everyday sentence.

Q2. What is the difference between 이 아니에요 and 가 아니에요?

Use 이 아니에요 after a noun ending in a consonant sound. Use 가 아니에요 after a noun ending in a vowel sound. The choice depends on the final Korean sound, not the English translation.

Q3. Can I use 안 with nouns in Korean?

No, 안 is not usually placed directly before nouns. 안 is mainly used with verbs and adjectives. When you want to say that a noun is not true, use 이/가 아니에요 instead.

• 저는 화가가 아니에요.
  (I am not a painter.)

Q4. What is the difference between 아니요 and 아니에요?

아니요 means “no” and is usually used as an answer. 아니에요 means “it is not” or “I am not” and works as a sentence ending. 아니요 answers the question first, while 아니에요 explains what is not true.

Q5. Is 아니예요 correct?

No. 아니예요 is not the correct spelling. The correct spelling is 아니에요. Many learners write 아니예요 because 예요 looks familiar, but the polite form of 아니다 is 아니에요.

Q6. Is 이/가 아니에요 polite?

Yes. 이/가 아니에요 is polite and natural in everyday Korean. It is common in regular conversations, classrooms, shops, and simple daily situations. In very formal speech or writing, Koreans may use 이/가 아닙니다 instead.

11. Conclusion: How to Use 이/가 아니에요 Naturally

이/가 아니에요 is the Korean grammar pattern you need when you want to say “I am not,” “it is not,” or “this is not” before a noun. Use 이 아니에요 after a consonant-ending noun and 가 아니에요 after a vowel-ending noun.

The most important point is simple: Korean does not use 안 directly before nouns. If the word you want to negate is a noun, 이/가 아니에요 is usually the natural choice.

12. Related Korean Grammar Lessons

👉 How Native Koreans Use 안: The Most Common Negative Form

👉 이에요/예요 Grammar: The Rule Native Speakers Automatically Follow

👉 How Koreans Actually Choose Between 이에요/예요 and 입니다

👉 Korean Location Sentences: Why Korean Uses 이/가 and 에

👉 Explore the complete Korean negative sentences guide.