The International ISBN Agency

Easily recognisable as the identifier for all kinds of books, the International Standard Book Number is key to an efficient and effective book supply chain.

The International ISBN Agency is the registration authority for the Standard on a global basis. 

Focus on

  • Photograph of meeting delegates in front of the National Library building

    This year the ISBN regional meeting of the Balkan group took place in Sofia, Bulgaria on 12 and 13 May 2015. Our kind hosts were the National Library St. Cyril and St. Methodius, which runs the Bulgaria ISBN Agency.


    Delegates from the following agencies were present at the meeting:

    • Bulgaria
    • Croatia
    • Montenegro
    • Serbia
    • Republic of Srpska
    • Slovenia
    • International ISMN Agency
    • International ISBN Agency
  • We are delighted to announce that the ISBN Users’ Manual is now available in Slovene. We wish to thank colleagues at the National and University Library in Ljubljana for this latest translation.