Japanese National Agency for ISIL

• What is ISIL?
• ISIL structure of Japan
• ISIL list of Japan
• Procedures to obtain ISIL and update ISIL list
• Beta version of International Standard Identifier for Libraries and Related Organizations (ISIL) LOD
• Links about ISIL
• Contact us

An ISIL (the International Standard identifier for libraries and related organizations) can be allocated to a library, a museum, an archive or a related organization.

ISO 15511 stipulates that the ISIL structure shall be administrated by national allocation agencies in each country. The National Diet Library (NDL) is in charge of allocation and maintenance of the ISIL as the National Registration Allocation Agency of Japan from October 2011.

Since 2011, we have been allocating ISIL to libraries in Japan (National Diet Library, university libraries, public libraries, special libraries, etc.). From October 2022, the scope has been expanded to include museums and archives.

The ISIL structure of Japan is as below.

We assign a 1-digit number for the institution type and a serial number for each institution's ID.

The ISIL list of Japan is open to the public and is updated from time to time. The ISIL list of Japan provides you the information below.

• ISIL
• Institution name in English
• Institution name in Japanese
• Institution name in Japanese (kana form)
• Postal code
• Address
• Telephone number
• Fax number
• URL
• Registration date (available since April 2020)
• Last update date (available since April 2020)

Our lists are in the public domain. You can use the lists freely.

• List of public libraries (CSV format 1.1MB)
• List of public libraries (Excel format 493KB)
• List of NDL, university libraries, special libraries etc. (CSV format 553KB)
• List of NDL, university libraries, special libraries etc. (Excel format 287KB)
• List of museums (CSV format 789KB)
• List of museums (Excel format 421KB)
• List of archives (CSV format 20KB)
• List of archives (Excel format 20KB)
• List of deleted ISIL (CSV format 18KB)
• List of deleted ISIL (Excel format 19KB)

In case an institution has multiple functions, an ISIL will be allocated to each function. If an institution has a central library and branch libraries, an ISIL will be allocated to each library.

Please send the application forms below to apply for registration, notify change or the closure of your institution. When we receive your application for registration or your closure notification, we will get back to you by e-mail or telephone for confirmation. Regarding notification of change, we will contact you when necessary.

There is no cost for registration.

Application forms

• Application for registration (Japanese only)
• Change or closure notification for ISIL institutions (Japanese only)

Here are links about ISIL.

• ISIL Registration Authority (Danish Agency for Culture and Palaces)
• ISO/TC46 (International Organization for Standardization/TC 46 - Information and Documentation - SC 4 - Technical Interoperability)

For further information please contact below.

[Japanese National Agency for ISIL]

Library Support Division
Kansai-kan of the National Diet Library
E-mail: isil