International Standard Book Numbers (ISBN)
Interruption of computing services on October 6, 2026
For maintenance purposes, the ISBN application will be unavailable on Tuesday, October 6, between 6 and 7:30 p.m. (EDT):
We regret any inconvenience this may cause.
An International Standard Book Number (ISBN) is a 13-digit number that uniquely identifies each specific edition of a book or monograph from a publisher. ISBNs are used by publishers to sell and distribute their publications worldwide. ISBN Canada provides free ISBNs to eligible publishers and publications.
Services and information
Login to your ISBN account
Login to your account to view and update your logbook, assign and request ISBNs, edit your profile
Apply for an ISBN account
Apply to get an account so that you may request ISBNs
Account instructions
How to login, view and update your logbook and publisher information
About ISBNs
Eligible publishers, eligible items, parts of an ISBN
Canadian ISBN Publishers' Directory
About the directory, search for a Canadian publisher
Contact ISBN Canada
For help or more information contact ISBN Canada