Japanese Superstitions and Lucky Numbers

From the number four to lucky cats, lucky calendar days and chopstick manners, here is a light-hearted guide to everyday Japanese beliefs.

Published October 15, 2026 at 10:25 PM JST | By Tokyo Paul

Quick answer: Many Japanese superstitions begin with wordplay: four (shi) and nine (ku) are approached with care, while seven and eight are considered lucky. The maneki neko beckoning cat brings fortune, the rokuyo calendar names taian as the luckiest day, and most beliefs are enjoyed as lighthearted traditions.

Every culture has little beliefs that shape daily habits, and Japan has a delightful collection of them. Some are about numbers, some about calendar days, and some about small household customs that people follow without thinking much about why. Most are treated as lighthearted traditions rather than strict rules, and many Japanese people enjoy them with a smile. This guide explains the best-known superstitions, the thinking behind them, and how visitors can enjoy them without worry.

Why Numbers Carry Meaning

Many Japanese beliefs begin with wordplay. The Japanese language has several ways to pronounce each number, and some sounds happen to match other words. The number four can be read as shi, which is also the sound of the word for death. For this reason, four is considered unlucky, and it is often read instead as yon, which avoids the awkward echo. Some hospitals and hotels leave out rooms or floors numbered four, much as some buildings in the West skip the thirteenth floor.

The number nine can be read as ku, which sounds like a word for suffering, so it is also approached with care. It can be read as kyu instead. This is why gifts are often given in sets of three or five rather than four, and why a comb, called kushi, is rarely given as a present because its name starts with that same ku sound. Interestingly, the Western worry about the number thirteen is a relatively recent import, and it is not a deep tradition in Japan.

These beliefs are a gentle reminder of how closely language and culture are linked. They are not a reason for visitors to fret. If you notice a missing room number in a hotel, simply enjoy it as a little cultural detail.

Lucky Numbers and Lucky Charms

Not every number is a worry. The number eight, pronounced hachi, is widely regarded as lucky, partly because the shape of the kanji character widens toward the bottom, which suggests growth and a spreading future. Seven is often seen as lucky too, helped by the popular group of the Seven Lucky Gods, known as Shichifukujin, who appear in New Year traditions.

The most famous good-luck charm is surely the maneki neko, the beckoning cat that sits in shops and restaurants across Japan. It is believed to bring money and good fortune to a business. According to popular belief, a raised left paw invites customers, while a raised right paw invites money, although the meanings can vary from place to place. The cat also comes in different colors. White stands for general good luck, black for warding off evil, red for good health, gold or yellow for wealth, and pink for romance.

The origin of the maneki neko is told in several stories. It is commonly believed to have begun in Edo, today's Tokyo, and the figures may have evolved from clay wares sold near Asakusa. A well-loved folk tale connects it to Gotokuji Temple, where a cat is said to have beckoned a party of travelers to shelter just before a storm. Several temples and shrines claim to be the birthplace, so you will find friendly debates among fans.

Lucky Days on the Calendar

Another interesting tradition is the rokuyo, a six-day cycle that appears on many Japanese calendars. Each day in the cycle is thought to carry a different kind of fortune. The names are sensho, tomobiki, senbu, butsumetsu, taian, and shakko. Among them, taian is regarded as the luckiest day and is popular for weddings and for opening new businesses. Butsumetsu is considered the least lucky, and many couples prefer to avoid it for celebrations.

Tomobiki has its own character. It is generally avoided for funerals but is perfectly fine for weddings. Sensho is described as good before noon, while senbu is the reverse, with good luck arriving after noon. Shakko is lucky only around midday. Most people do not live by the cycle in daily life, but it still shapes decisions about weddings and other big events.

For a traveler, the rokuyo is mostly a curiosity. If you spot a Japanese calendar with small day names printed beside the dates, you can try to find the taian days yourself.

Everyday Customs Around the Home and Table

A number of small customs show up in daily life. One of the best known concerns chopsticks. You should never stand them upright in a bowl of rice, since that image is reserved for offerings to the departed. The simple habit of resting chopsticks on the holder or across the bowl keeps you on the safe side. It is also considered good manners not to pass food directly from one pair of chopsticks to another.

Other beliefs are gentler and more playful. Some people say that cutting your nails at night is unlucky, a folk belief tied to wanting to stay close to one's parents. Another custom is that when a hearse passes, people tuck their thumbs into their fists. The word for thumb, oyayubi, literally contains the word for parent, and the gesture is believed to protect one's parents. You may notice it with a smile, and nobody expects a visitor to join in.

Lucky charms are also woven into life. Many people buy small amulets at shrines and temples for safe travel, good health, or success in exams. These are usually tucked into a bag or hung on a phone, and they make thoughtful souvenirs.

Enjoying These Traditions as a Visitor

The best approach is curiosity and good humor. Learn a few of these beliefs, and you will find them popping up in conversation, in shops, and in the way things are arranged. When giving a gift, choose items in sets of three or five rather than four, and consider avoiding combs. If you are choosing a souvenir, a small lucky cat or a shrine charm is a happy option.

If you stay in a hotel without a room four or a floor four, treat it as a local quirk. When dining, keep your chopsticks tidy and avoid the upright-in-rice position. And if someone mentions that a certain day is lucky, join in with a smile, because these traditions are as much about sharing good wishes as about rules.

Remember that attitudes differ from person to person. Some people follow these customs closely, others treat them as fun trivia, and many fall somewhere in between. Asking a friend about their own favorite superstition is a pleasant way to start a conversation and learn more about their family traditions.

Quick Takeaways

Many Japanese superstitions come from wordplay: four sounds like shi and nine sounds like ku, so both are approached with care, while eight and seven are considered lucky. The maneki neko beckons good fortune, the rokuyo calendar names taian as an especially lucky day, and small customs around chopsticks and thumbs add everyday color. All of these are best enjoyed as part of Japan's warm and playful culture.

Take the ones you like, smile at the rest, and let them be an invitation to look more closely at the world around you. A little luck, after all, never hurt anyone's trip.

Frequently Asked Questions

Why is the number four considered unlucky in Japan?

The number four can be read as shi, which is also the sound of the word for death, so it is often read as yon instead. Some hospitals and hotels leave out rooms or floors numbered four. Visitors can simply enjoy a missing room number as a little cultural detail.

What does the maneki neko mean?

The maneki neko is the beckoning cat seen in shops and restaurants across Japan, believed to bring money and good fortune to a business. By popular belief, a raised left paw invites customers and a raised right paw invites money. White means general luck, black wards off evil, red means health and gold means wealth.

What is the rokuyo calendar?

The rokuyo is a six-day cycle printed on many Japanese calendars, with each day thought to carry a different fortune. Taian is regarded as the luckiest day and is popular for weddings and opening new businesses, while butsumetsu is considered the least lucky. Most people do not live by it daily.

Keep Exploring

More guides from Tokyo Paul: Weddings in Japan, Japanese Proverbs: Wisdom in a Few Words, Osechi: Japan's New Year Feast.