連絡先

The Japanese word renrakusaki is an absolutely essential vocabulary item for anyone living, working, or traveling in Japan. At its core, it refers to contact information, but its usage and cultural implications extend far beyond a simple phone number or email address. When we break down the kanji, we see three distinct characters that each contribute to the overall meaning. The first character means to connect or take along. The second character means to entangle or coil around, often used in the context of relationships or communication networks. Together, they form the word renraku, which means communication, contact, or connection. The final character, saki, means destination, point, or ahead. Therefore, the literal translation is the destination of communication. In modern Japanese society, this term encompasses a wide variety of information types. Historically, it might have referred to a physical mailing address or a landline telephone number. However, in the contemporary digital age, it most commonly refers to a mobile phone number, an email address, or a user ID for popular messaging applications such as LINE, which is ubiquitous in Japan. Understanding this word is crucial because you will encounter it in almost every administrative, social, and professional situation. Whether you are filling out a form at the local ward office, registering for a point card at a supermarket, exchanging business cards during a corporate meeting, or simply trying to stay in touch with a new friend you met at a language exchange event, you will need to know how to provide and ask for this information. Furthermore, the concept of emergency contact information is heavily emphasized in Japanese institutions, from schools to workplaces, highlighting the societal focus on safety and preparedness. The versatility of this noun allows it to be paired with various verbs, such as to teach or tell, to exchange, and to listen or ask. Mastery of this word and its associated collocations will significantly enhance your ability to navigate daily life in Japan smoothly and confidently, ensuring that you can always maintain connections with the people and organizations that matter to you. This word is a fundamental building block for establishing and maintaining relationships in Japanese society, serving as the bridge between initial meetings and ongoing interactions. Without a clear understanding of how to use and respond to requests for this information, one might find themselves isolated or unable to complete necessary bureaucratic tasks. Therefore, dedicating time to fully grasp its nuances, common pairings, and cultural weight is a highly recommended step for any serious learner of the Japanese language.

Literal Meaning

The destination of communication or the point of contact.

Modern Usage

Phone numbers, email addresses, and social media handles.

Cultural Importance

Vital for administrative forms, business networking, and personal relationships.

Using the word renrakusaki correctly involves understanding the specific verbs and particles that naturally collocate with it. Because it is a noun representing a piece of information, it is most frequently marked by the object particle 'wo' when you are performing an action upon it. The most common verb paired with this word is 'oshieru', which translates to 'to teach' but in this context means 'to tell' or 'to give'. When you want to ask someone for their phone number or LINE ID, you would politely say 'renrakusaki wo oshiete kudasai' or, even more politely, 'renrakusaki wo oshiete itadakemasu ka'. Another highly frequent verb is 'koukan suru', meaning 'to exchange'. This is particularly common in social situations, such as at a drinking party (nomikai) or a networking event, where two people mutually share their details. You would say 'renrakusaki wo koukan shimashou' (let's exchange contact info). If you are simply stating that you know or do not know someone's details, you use the verb 'shiru' (to know), as in 'kare no renrakusaki wo shitte imasu' (I know his contact info). When filling out forms, you might see instructions like 'renrakusaki wo kinyuu shite kudasai' (please fill in your contact information). It is also important to note the use of the subject particle 'ga' when the information itself is the subject of the sentence. For example, if your phone number changes, you would say 'renrakusaki ga kawarimashita' (my contact info has changed). In business emails, it is standard practice to include your details at the very bottom of the message, often referred to as a signature block, but the concept remains the same. When dealing with emergencies, the compound noun 'kinkyuu renrakusaki' (emergency contact) is used, and you might be asked 'kinkyuu renrakusaki wa donata ni shimasu ka' (who will be your emergency contact?). Understanding these patterns is crucial for fluent communication. You must also be aware of the social hierarchy and politeness levels (keigo) when asking for this information. Asking a superior for their details requires much more polite language than asking a peer. For instance, using 'ukagau' (the humble form of to ask/hear) is appropriate when speaking to a client: 'renrakusaki o ukagatte mo yoroshii deshou ka' (may I ask for your contact information?). By mastering these specific verb pairings and the appropriate levels of politeness, you will be able to navigate both casual and formal Japanese environments with ease and confidence, ensuring that you can always establish and maintain necessary lines of communication.

Asking for Info

Use the verb oshieru (to teach/tell) with the particle wo.

Exchanging Info

Use the verb koukan suru (to exchange) in social settings.

Formal Situations

Use humble verbs like ukagau when asking superiors or clients.

You will hear and see the word renrakusaki in a vast array of contexts throughout your daily life in Japan, making it one of the most frequently encountered nouns for residents and visitors alike. One of the most common places you will see this word is on official forms and documents. Whether you are opening a bank account, registering your address at the local ward office (kuyakusho), signing a lease for an apartment, or filling out a medical questionnaire at a hospital or clinic, there will invariably be a section labeled 'renrakusaki'. In these administrative contexts, it usually requires a phone number where you can be reliably reached during the day. Another highly common context is in the workplace and business environments. During meetings with new clients or partners, the exchange of business cards (meishi koukan) is a fundamental ritual. While the card itself contains the information, the word might be spoken when confirming details, such as 'kojin no renrakusaki mo kaite arimasu' (my personal contact info is also written here). In business emails, it is standard practice to ask for a client's details if they are missing, or to provide your own when introducing yourself to a new contact. You will also hear this word frequently in social situations. When you meet someone new at a party, a club, or a language exchange event, and you want to stay in touch, asking for their renrakusaki is the standard procedure. In modern times, this almost always implies asking for their LINE ID or Instagram handle rather than a traditional phone number, though the word itself remains unchanged. Furthermore, the concept of an emergency contact (kinkyuu renrakusaki) is pervasive. Schools require parents to provide it, employers require it from employees, and landlords require it from tenants. In the event of an earthquake or other natural disaster, having accurate emergency details on file is considered a critical safety measure. You might also hear it in customer service scenarios. If you order an item for delivery and there is an issue with the address, the delivery driver might call and say they got your details from the shipping label. If you lose an item and report it to the police (koban), they will ask for your details so they can notify you if the item is found. The ubiquity of this word across administrative, professional, social, and emergency contexts underscores its vital importance in the Japanese language and society. Recognizing it on forms and understanding it in spoken conversation is essential for functioning smoothly in Japan.

Administrative Forms

Banks, hospitals, and city halls always require this information.

Business Settings

Used during introductions, email signatures, and client meetings.

Social Events

The standard term used when making new friends and networking.

When learning and using the word renrakusaki, Japanese learners often make a few common mistakes that can lead to confusion or awkward social interactions. The most frequent error is confusing the noun renrakusaki (contact information) with the verbal noun renraku (the act of contacting or communicating). For example, a learner might say 'renraku o oshiete kudasai', which literally means 'please teach me the contact', instead of the correct 'renrakusaki o oshiete kudasai' (please tell me your contact information). While a native speaker will likely understand what you mean, it sounds unnatural. Renraku is the action; renrakusaki is the destination or the data itself. Another common mistake involves the choice of verbs. Learners often try to translate the English phrase 'give me your number' directly into Japanese, resulting in phrases like 'renrakusaki o kudasai' or 'renrakusaki o ataete kudasai'. While 'kudasai' can be used to request things, in the context of information, it is much more natural and polite to use the verb 'oshieru' (to teach/tell). Therefore, 'renrakusaki o oshiete kudasai' is the standard and correct phrasing. Additionally, learners sometimes struggle with the appropriate level of politeness. Asking for someone's personal information is inherently a slight imposition, so using overly casual language with someone you have just met can be perceived as rude or overly forward. Using a simple 'renrakusaki oshiete' is fine for a peer at a casual party, but using it with a senior colleague or a client is a major faux pas. In those situations, you must elevate your language to keigo, using phrases like 'renrakusaki o ukagatte mo yoroshii deshou ka' (would it be alright if I asked for your contact details?). Another subtle mistake is related to the scope of the word. While renrakusaki is a broad term, if you specifically need a phone number or an email address, it is sometimes better to use the specific terms (denwa bangou or meeru adoresu). If you just ask for renrakusaki, a younger person might give you their LINE ID, which might not be useful if you need to call them officially. Finally, learners sometimes forget the particle 'ni' when talking about the act of contacting the destination. You send a message 'to' the contact info, so you say 'sono renrakusaki ni renraku shimasu' (I will contact that information/number). Paying attention to these distinctions between the action and the information, selecting the correct verbs, and matching the politeness level to the situation will help you avoid these common pitfalls and communicate much more naturally.

Action vs Info

Do not confuse renraku (the action) with renrakusaki (the information).

Wrong Verbs

Avoid using kudasai directly; use oshiete kudasai instead.

Politeness Levels

Always adjust your politeness based on who you are asking.

While renrakusaki is a highly versatile and commonly used word for contact information, there are several other related terms in Japanese that learners should be aware of to ensure precise communication. Understanding the nuances and specific use cases for these similar words will greatly expand your vocabulary and help you navigate various situations more effectively. The most direct subsets of renrakusaki are the specific types of contact information. 'Denwa bangou' translates specifically to 'telephone number'. If you strictly need to call someone and a messaging app won't suffice, you should ask for their denwa bangou rather than the broader renrakusaki. Similarly, 'meeru adoresu' (often shortened to 'meado' in casual slang) refers specifically to an email address. In professional settings, asking for a meeru adoresu is very common. Another related word is 'juusho', which means 'physical address' or 'residence'. While a physical address can technically be a form of contact information, renrakusaki in modern Japanese almost exclusively implies digital or telephonic contact. If you need to mail a physical package or letter, you must ask for the juusho. Another term you might encounter, especially in business or formal correspondence, is 'atesaki'. Atesaki translates to 'recipient' or 'destination address' (usually for mail or email). While renrakusaki is the information itself, atesaki focuses on the destination entity or the specific address field on an envelope or email. For example, if an email bounces back, you might say the atesaki was wrong. There is also the word 'madoguchi', which literally means 'window' but is used metaphorically to mean 'point of contact' or 'liaison' for an organization or project. If you are dealing with a large company and need to know who to talk to regarding a specific issue, you would ask for the madoguchi, not the renrakusaki (though the madoguchi will have their own renrakusaki). Finally, the word 'jyoushou' (information) is a broader term that encompasses all types of data, including contact details, but is too vague to use when specifically asking for a phone number. By understanding these distinctions, you can choose the most accurate word for your specific needs. Use renrakusaki as your reliable catch-all term for phone numbers and digital handles, but switch to denwa bangou, meeru adoresu, juusho, or madoguchi when the situation requires greater specificity.

電話番号 (Denwa bangou)

Specifically means telephone number. Use when you must make a voice call.

住所 (Juusho)

Physical address. Use when you need to send physical mail or visit a location.

宛先 (Atesaki)

Recipient or destination address, primarily used for mail and email routing.