How to Get Rid of Your Middle Name in Japan (Or At Least Register an Alias)

If you've ever tried to open a bank account in Japan with a three-part name, you know exactly why this article exists. If not, you should know that Japan's administrative and financial systems are largely built around two-part names: a family name and a given name. That's it. 

For foreigners living here, this rule can cause serious issues. Whether you're trying to get a credit card, sign a lease, or set up utilities, you’ll find that a middle name can become a surprisingly big hurdle to overcome on a daily basis. 

The good news is that you have options. You can either remove your middle name through your home country's legal system or register a Japanese alias name (通称名, tsushomei) and bypass the problem without having to change anything on your passport.

We’ll cover both options in this guide, explain how to change name in Japan, and answer some FAQs.

Let’s dive in.

Japanese Names: A Quick Background

Japanese names follow a straightforward structure: Family name first, given name second. That's the full name. There are no legal provisions for middle names in Japan's family registry system (戸籍, koseki), and the vast majority of Japanese people simply don't have them. 

There's also no cultural tradition around using a middle name to honor a grandparent, carry on a family name, or distinguish between relatives with the same given name.

There are rare exceptions, though. A child can technically be registered with two given names on the koseki, but this results in an unusual-looking entry and isn't common practice. 

For non-Japanese children born in Japan, the naming conventions of the child's home country apply, which is where middle names can enter the picture.

The family name itself, though, follows its own social logic. In Japan, married couples are legally required to share one family name. Most commonly, the wife takes the husband's name, but this isn't a universal rule. 

If the husband's family already has other sons to carry the name forward while the wife's family does not, it's not unusual for the couple to take the wife's name instead. Today, this is simply a practical family decision, and either spouse can legally take the other's name at the time of marriage.

As a foreigner, if you have a bilingual name or are thinking about how to name your child, check out our article on names that work in Japanese and English.

When Your Middle Name Becomes a Problem in Japan

Japan runs on precision. Names in official systems are expected to match exactly across documents, and many institutions simply aren't designed to handle a middle name at all.

By far, the two situations where this causes the most friction are opening a bank account and applying for a credit card. 

Opening a Bank Account with a Middle Name

Most Japanese banks record your name as it appears on your residence card (在留カード, zairyu card), and your residence card reflects your passport. 

So, if you have a three-part name on your passport, it has to get recorded fully, but the problem is that many online forms, banking apps, and ATM interfaces have character limits that can't accommodate a full three-part name.

Some banks will allow you to register using only your first and last name, ignoring the middle name. However, this can create a mismatch between your card details and other official documents, causing further problems down the line.

Applying for Credit Cards or a Contract with a Middle Name

If you apply with a middle name, credit card applications may lead to similar issues to when you try to open a bank account. 

If the name on your card doesn't exactly match what's on your passport or residence card, you can run into trouble with international transactions or verification checks. Keep in mind that if you're applying for a card that requires stricter identity verification, even a minor discrepancy is enough to trigger a rejection.

The same issues can pop up when applying for a phone contract, registering utilities, or signing up for financial services like investment accounts. Japan's KYC (Know Your Customer) processes are thorough, and even a small naming discrepancy can cause a rejection or a very long conversation at a branch counter. 

Some people also run into problems when registering for government services online or linking their My Number card to their accounts, since the name fields there are equally rigid.

Speaking of financial services, if you're navigating the Japanese banking and credit card landscape as a foreigner, our article about the best credit cards in Japan for foreigners is worth a read.

How to Legally Remove a Middle Name in Japan

If you want to fully remove your middle name from your legal identity, the first thing you need to know is that the process starts outside of Japan. 

Unfortunately, you can’t initiate or complete a legal name change through Japanese authorities alone. Japan's immigration and residency systems work according to your passport, so until your home country's documents are updated, nothing changes here.

Here's how the process generally works, though you'll want to confirm the specific steps for your home country's legal system.

Step 1: Change Your Legal Name in Your Home Country

This process varies significantly depending on where you're from. Some countries allow name changes through a simple statutory declaration or deed poll, while others require a court order, a government application process, or a visit to a consulate.

Research the requirements for your specific nationality early, as timelines can range from a few weeks to several months.

If you need help navigating your home country's process from Japan, your country's embassy or consulate can point you in the right direction.

Step 2: Obtain a New Passport

Once your home country's records are updated, apply for a new passport that reflects your new name without the middle name.

This is the document that Japan's immigration system will recognize, so it's a critical step. Nothing in Japan updates until you have your new passport.

Step 3: Notify Japanese Immigration Within 14 Days

Once you have your new passport, you're legally required to report the name change to the immigration office that covers your area of residence.

Keep in mind that you must do this within 14 days of the change. Failing to notify immigration on time can result in complications with your residence status, so don't put this off.

Step 4: Update Your Residence Card

Along with notifying immigration, you'll also need to have your residence card reissued with your updated name.

You’ll find more details on what to bring and what to expect in the ‘changing your name on your residence card’ section below.

Step 5: Notify All Other Organizations

Once your residence card is updated, you’ll have to go through every institution that holds your name on file and update your information there.

This includes your bank, credit card provider, mobile carrier, utility companies, your employer's HR department, health insurance, pension, and any online services tied to your identity.

This might end up being a longer checklist than you’d expect, so writing it all down in a list will help you not miss anything. 

How to Register an Alias (通称名): Registering Alias in Japan

Legally changing your name abroad may not always be the most practical option, and understandably so. 

If you just want a faster solution to the middle-name problem, registering a Japanese alias name is the easier and more common path. 

An alias name, called tsushomei (通称名), is a name you can officially register at your local city hall and use in daily life in Japan. It appears on your residence card alongside your legal name.

One thing to note, however, is that the rules around alias name registration are handled at the municipal level, which means documentation requirements and eligibility criteria can differ between cities. What works in Tokyo may not work exactly the same way in Osaka or Sendai. 

So, always contact your local city hall first to confirm what they need.

Here's how the general process works.

Step 1: Contact Your Local City Hall First

This may be redundant, but don't just show up and hope for the best. Call or visit in advance to get the specific list of documents you'll need.

Some municipalities accept more documentation types than others, and the criteria for what qualifies as a valid alias can vary from city to city.

Step 2: Submit an Alias Registration at Your City Hall

Complete the application form and submit the required documents.

The alias you register needs to be one you've actually used in practice, not just a name you'd like to have. Be prepared to show evidence that the name is genuinely connected to you.

Some city halls are more flexible than others in what they consider acceptable evidence, which is another reason why calling ahead makes such a big difference.

Step 3: Notify Japanese Immigration Within 14 Days

Once your alias is registered and your residence card is updated to reflect it, you're required to notify the immigration office within 14 days, just as with a legal name change.

Once again, forgetting to do this can have serious consequences, so set yourself a reminder.

Step 4: Update Relevant Organizations

Your alias name can now be used for everyday purposes in Japan, but you'll still want to let your bank, employer, and other relevant institutions know about the update.

Banks in particular may request to see your updated residence card before they record any changes to your account name.

One practical note: Only Hiragana, Katakana, and Kanji are permitted when registering an alias. That means Roman letters, Hangul, symbols, and other character sets are not allowed, regardless of how your original name is spelled. 

How to Change Your Name on Residence Card Japan

Whether you've legally changed your name or registered an alias, you'll need to update your residence card to reflect the change. This is handled at the immigration office for the area where you're registered, not at the city hall.

According to Japan's Immigration Services Agency, you must report any change to the details recorded on your residence card within 14 days of the change occurring. The office is open on weekdays from 9:00 AM to 12:00 PM and 1:00 PM to 4:00 PM, so plan accordingly.

When you visit, you'll generally need to bring the following:

• A completed residence card change notification form (在留カード記載事項変更届出書)

• One passport-sized photo that meets the specified requirements (not required for those under 16)

• Documents proving the change, such as your updated passport and, depending on the reason for the change, a marriage certificate, birth certificate, or related court order

• Your current residence card

• Your passport

If someone else is submitting the notification on your behalf, additional documents are required to establish their relationship to you and their authorization to act on your behalf. 

The immigration office may also request a written explanation of the reason for the change, so having a brief statement prepared doesn't hurt.

In most cases, the updated residence card is issued on the same day, though this isn't guaranteed if your supporting documents need additional review.

Frequently Asked Questions About Alias Name in Japan

Here are the most common questions that come up when foreigners start looking into alias names in Japan.

What Is an Alias Name in Japan?

An alias name, or tsushomei (通称名), is a name other than your legal name that you can officially register for use in everyday life in Japan. It's recognized as a legitimate identifier and, once registered, appears on your residence card. It's distinct from your legal name but can be used for most practical purposes, including banking, employment, and public services.

Can I Register a Japanese Name as My Alias?

In some cases, yes. Certain municipalities allow foreigners to register a Japanese name as their alias, particularly in situations where the person has a genuine connection to that name, such as through marriage to a Japanese citizen or long-term use of a Japanese name in their professional or personal life.

That said, the rules here are not uniform. Each city hall applies its own criteria, and you generally cannot simply choose any Japanese name you like. You'll need to demonstrate that the name is actually used in your life and has some documented basis. Contacting your local city office to confirm what's acceptable in your area is the only reliable way to get an accurate answer.

Can I Change My Alias Name in Japan?

Generally speaking, no. Once you've registered an alias name, you can't change it simply because you'd prefer a different one. Changes are only permitted in specific circumstances, such as following a marriage, divorce, or adoption.

Which Characters Are Allowed for an Alias Name?

Alias names must be written using Hiragana, Katakana, or Kanji. This excludes standard Chinese characters (traditional or simplified), Roman letters, Hangul, symbols, and other scripts. If your intended alias can't be written in one of the three permitted character sets, it won't be accepted.

What Do I Need to Bring to City Hall to Register an Alias?

Documentation requirements vary by municipality, so the list below is a general guide rather than a guaranteed checklist. Call your city hall in advance to confirm exactly what they need.

Typical documents include your residence card, your passport, and evidence that the alias name is genuinely used in your life. This could be documents from your home country showing a name variation, a marriage certificate if you're using a spouse's Japanese name, business cards, old utility bills, or other materials that connect you to the alias you want to register. 

Some city halls may also ask for supporting forms or written explanations, depending on your individual situation. If someone else is submitting the application on your behalf, you'll also need to bring documentation showing that relationship, such as a letter of authorization.

It's worth visiting during weekday business hours and budgeting extra time for your first visit, especially if your Japanese is limited and you need to explain your situation. Some city halls have multilingual staff, but it's not guaranteed.

Concluding Words on the Issue of Middle Name in Japan

Navigating Japanese bureaucracy with a middle name in Japan can be challenging, but you have options.

The alias route is generally faster and doesn't require changes to your passport or home country records, making it the more practical first step for many people. Please note that the process varies by city, so be sure to check with your local city hall before assuming anything about the required documentation or the names they'll accept.

If you choose the legal removal route instead, we recommend giving yourself plenty of time. 

Between navigating your home country's name change process, waiting for a new passport, and then updating your residence card and notifying every organization that has your name on file, it's a multi-month project for most people.

Whichever path you take, the daily frustration of having a name that doesn't fit Japan's systems pretty much disappears once everything is updated. 

While this is all we have on the middle name issue, if you’d like to learn more about navigating bureaucracy in Japan, check out our guide to Japan’s residence tax.