Korea is one of those places where modern life and old beliefs sit side by side without much trouble.
You have a country filled with high-rise apartments, advanced tech, and fast-moving city life. Yet, people still avoid certain numbers, watch what color ink they use, or quietly take a dream as a sign of luck.
This Korean superstition list explores 15 common beliefs that are still widely recognized in modern Korea. Some are taken seriously, while others are followed more out of habit or tradition than fear.
A Complete Korean Superstition List You Should Know
Korean superstitions are not just relics of the past. Many are still recognized today, even among younger generations. While some people follow them strictly, others treat them as cultural habits or “just in case” practices.
Below is a complete list of Korean superstitions, explained in depth so you can understand not just what they are but why they exist.
1. Writing Names in Red Ink Brings Death
One of the most well-known entries in any Korean superstitions list is the belief that writing someone’s name in red ink is a bad omen.
Historically, red ink was used to write the names of the deceased in family registers or funeral documents. Because of this association, writing a living person’s name in red is thought to invite death or misfortune.
Even today, many Koreans avoid using red pens for names. It’s not uncommon to see students or office workers switch colors if they accidentally start writing someone’s name in red.
Why this belief persists:
- Strong historical association with death records
- Cultural respect for the living vs. the deceased
- Social awareness and etiquette
2. The Number Four Is Unlucky
In Korea, the number four (사, “sa”) sounds similar to the word for death (also 사). Because of this phonetic similarity, it is considered unlucky.
You’ll often see this reflected in buildings, where the fourth floor is labeled “F” instead of “4,” as in some Western buildings that skip the 13th floor.
This belief is deeply ingrained in Korean society and appears frequently in any Korean superstition list.
Where you’ll notice it:
- Elevators skipping the number 4
- Hospital room numbering
- Phone numbers and license plates
3. Sleeping with a Fan On Can Be Dangerous (“Fan Death”)
The concept of “fan death” is among the most wildly discussed Korean superstitions internationally. It refers to the belief that sleeping in a closed room with an electric fan running can lead to suffocation or death.
While there is no scientific evidence supporting this, many older Koreans still believe it. Some fans in Korea even come with timers, reinforcing the idea that they shouldn’t run all night.
Common explanations people believe:
- The fan consumes oxygen
- It causes hypothermia
- It leads to carbon dioxide buildup
4. Don’t Whistle at Night
Whistling at night is believed to attract spirits or ghosts. This superstition has roots in traditional folklore, where nighttime is considered a time when supernatural entities are more active.
Parents often warn children not to whistle after dark, reinforcing the belief from a young age.
Cultural reasoning:
- Night is associated with spirits in many Asian traditions
- Sound is believed to “call” unseen entities
5. Dreaming of Pigs Brings Good Luck
Not all superstitions are negative. In fact, dreaming about pigs is considered extremely lucky in Korea.
Pigs symbolize wealth and prosperity, so dreaming of them is often interpreted as a sign of incoming financial gain. Some people even buy lottery tickets after such dreams.
This is one of the more positive entries in any Korean superstition list, showing how superstition can also bring hope and excitement.
6. Don’t Shake Your Leg
Shaking your leg while sitting is believed to “shake away” your wealth and luck.
This belief is often taught as both a superstition and a behavioral guideline, especially for children. It’s seen as impolite and careless, reinforcing both social etiquette and superstition.
What it represents:
- Loss of stability
- Carelessness with money or fortune
- Poor manners
7. Giving Shoes Means the Person Will Leave You
In Korean culture, giving someone shoes as a gift can symbolize that they will walk away from you, either physically or emotionally.
Because of this, shoes are often avoided as romantic gifts. If they are given, it’s sometimes done with a small payment to “cancel out” the superstition.
8. Cutting Nails at Night Invites Bad Spirits
Another traditional belief is that cutting your nails at night can attract ghosts or allow spirits to take your nail clippings and harm you.
Historically, this may have been a practical warning. Before electricity, cutting nails in the dark could be dangerous, so the superstition helped enforce safer behavior.
9. Eating Seaweed Soup Before Exams Is Bad Luck
Seaweed soup (미역국, miyeok-guk) is commonly eaten on birthdays in Korea. However, students avoid eating it before exams.
Why? Because seaweed is slippery, and eating it is believed to make you “slip” on your test. It means you might fail or forget answers. This is a classic example of symbolic thinking in Korean culture.
10. Don’t Step on Thresholds
Stepping on the threshold of a doorway is believed to bring bad luck or disturb household spirits.
In traditional Korean homes, thresholds were considered sacred boundaries between spaces. Respecting them was a sign of awareness and good manners.
11. Washing Hair Before an Important Event Is Risky
Some people believe that washing your hair before an exam or important event can “wash away” your knowledge or luck. While not universally followed, it’s still commonly mentioned, especially among students.
12. Owls Are a Sign of Bad Luck
In many cultures, owls symbolize wisdom. But in Korea, they are often associated with death or misfortune. Hearing an owl at night was historically considered a bad omen, especially in rural areas.
13. Blood Dreams Can Mean Good Fortune
Dreams involving blood might seem frightening, but in Korean dream interpretation, they can symbolize wealth or success. This belief ties into a broader system of dream symbolism that many people still find interesting, even if they don’t fully believe in it.
14. Breaking a Mirror Brings Misfortune
Similar to Western beliefs, breaking a mirror in Korea is considered unlucky. It is often associated with bad energy or future misfortune. This overlap shows how some superstitions transcend cultural boundaries.
15. Moving on Certain Days Brings Bad Luck
Choosing the wrong day to move house can be seen as inviting bad luck. Many people consult the lunar calendar or a fortune teller to choose an auspicious date. Even in modern Korea, this practice is still followed by some families.
Why These Superstitions Still Matter Today
Why do these beliefs still appear in a modern, highly developed country like South Korea? The answer lies in the balance between tradition and modernity.
Many people don’t fully believe in these superstitions, but they still follow them out of habit, respect, or cultural identity.
Reasons they persist:
- Strong cultural heritage
- Influence of family traditions
- Media and K-drama exposure
- “Better safe than sorry” mindset
Korean media often reinforces these beliefs, which is why platforms like Saranghero help understand the cultural context behind what you see on screen.
Final Thoughts
This detailed list of Korean superstitions shows that even in a modern world, traditional beliefs still shape everyday life in subtle ways. Whether it’s avoiding red ink or choosing the right day to move, these practices are part of a cultural system that blends history, symbolism, and social norms.
You don’t have to believe in them to appreciate them. In fact, learning about these superstitions can deepen your understanding of Korean culture and make your experience with K-dramas, language learning, or travel even more meaningful.