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Information about logging in or changing your registration details Frequently Asked Questions

Your inquiry


  • The spam protection graphic (CAPTCHA) displayed during the registration process is difficult, so registration is not possible.

    If fraudulent Hatena registrations are detected from your location, we may require some additional steps to ensure that the information you provide is valid. If creation of additional Hatena accounts is required at your location for some reason, please contact Hatena Customer Support by clicking on the support link at the bottom of this page and we will do our best to assist you. Please be sure to tell us the following information when you contact us:

    • Your name
    • The name of your organization
    • Your reason for registering

Contact us

If your support matter is urgent, or if you have encountered a serious bug, please contact us directly. Please include your name, email address and a description of the problem and send it us via our contact form. Our support staff will investigate your problem and reply to you by email.

ただいま多くのお問い合わせをいただいており、返信までにお時間がかかることがございます。 順次返信いたしますので、今しばらくお待ちいただけますでしょうか。 大変ご不便をおかけし誠に申し訳ございませんが、ご了承ください。

Name (Hatena ID)
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Inquiry typeInformation about logging in or changing your registration details
  • If you do not enter an email address you will not receive a reply.
  • Some of your support inquiries may be used on the website for inclusion in our support FAQ (Frequently Asked Questions). Please note that no personal information in regards to you will be listed if we include your question.
  • If you have not received a reply please check your email client's junk mail folder and see if the email was mistaken for spam. Please also change your email client's spam filter settings to allow mailings to be received from the and domains.