The Global Standard for Identifying Titles!

Purchase ISBNs HERE!


  • ISBNs are the global standard for identifying titles
  • Each version of a book, print or digital, requires its own ISBN. Be sure to purchase enough for your needs
  • Most retailers require ISBNs to track book inventory
  • Buying an ISBN improves the chances your book will be found

ISBN Product Details

“ISBN” stands for “International Standard Book Number“.
The ISBN identifies a book or other book-like product (such as an audiobook) in a specific format and edition, but also the publisher. 

The purpose of the ISBN is to establish and identify one title or edition of a title from one specific publisher and is unique to that edition, allowing for more efficient marketing of products by booksellers, libraries, universities, wholesalers and distributors.

If you are located in the United States, or a territory of the USA (Puerto Rico, Guam, US Virgin Islands, Northern Mariana Islands, America Samoa, as well as military bases and embassies), Bowker is the official registration agency of the ISBN.

For more information about the ISBN standard, or if you are looking for the ISBN Agency in your jurisdiction visit the International ISBN Agency.