ISBN - Wikipedia
The International Standard Book Number (ISBN) is a numeric commercial book identifier that is intended to be unique. [a][b] Publishers purchase or receive ISBNs from an affiliate of the International ISBN Agency. [2]
Home | ISBN.org
Standard Address Numbers simplify how books are shipped! Uniquely identify your title with an ISBN and Barcode. Three different packages. One simple solution. Grow your audience with the Book2Look Biblet. Bookwire, making it easier to discover, evaluate, order and experience books. Publish your own title. © 2025 R.R. Bowker LLC.
ISBN Search
Find books easily using ISBN, title, or author searches. Search using ISBN-10 or ISBN-13.
ISBN US - R. R. Bowker
The most important identifier your book can have is the ISBN. As the U.S. ISBN Agency, Bowker is the ONLY official source of ISBNs in the United States. ISBNs provide unique identification for books and simplify the distribution of your books throughout the global supply chain.
International Standard Book Number (ISBN) - kdp.amazon.com
An ISBN, or International Standard Book Number, is a unique number that is assigned to every published book. An ISBN identifies a book's edition, publisher, and physical properties like trim size, page count, and binding type.
What is an ISBN? | International ISBN Agency
An ISBN is an International Standard Book Number. ISBNs were 10 digits in length up to the end of December 2006, but since 1 January 2007 they now always consist of 13 digits. ISBNs are calculated using a specific mathematical formula and include a check digit to validate the number.
Raja Rammohun Roy National Agency for ISBN
The International Standard Book Number (ISBN) is a unique International Publisher’s Identifier number, which is meant for monograph publications. ISBN is the thirteen-digit number, which replaces the handling of long bibliographic descriptive records.
FAQs: General Questions - ISBN.org
The International Standard Book Number (ISBN) is a 13-digit number that uniquely identifies books and book-like products published internationally. What is the purpose of an ISBN?
About the ISBN Standard
"ISBN" stands for "International Standard Book Number". An ISBN is a number, not a bar code. One agency per country is designated to assign ISBNs for the publishers and self-publishers located in that country.
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.