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The Canadian ISBN Service System (CISS)

Canadian ISBN Publishers' Directory

About the Directory

What's Included in the Directory

The Canadian ISBN Publishers' Directory contains name and contact information for most Canadian publishers, past and present, who use the ISBN system. It currently lists over 33,000 publishers who use ISBNs for their Canadian publications.

Information in the directory is provided by the Canadian ISBN Service System (CISS). CISS is a free online service allowing publishers to manage their ISBN logbooks, to assign ISBNs in real time to future publications, and to modify information about publications.

What's Not in the Directory

Many French-language publishers are not included in the directory because they obtain their ISBN assignments from the Bibliothèque et Archives nationales du Québec. These ISBN assignments can be found in the Répertoire des numéros ISBN des éditeurs francophones canadiens, located on the Web at

For more information please contact:

Bibliothèque et Archives nationales du Québec
2275 Holt Street
Montréal, QC  H2G 3H1
Telephone (in Montréal): 514-873-1101, ext. 3785
or 1-800-363-9028, ext. 3785 (Toll free in Quebec)
Fax: 514-873-4310

Currency of the Information

The information in the Canadian ISBN Publishers' Directory is updated by the publishers themselves. The Canadian ISBN Agency may also update information as it becomes available. If a publisher has not entered CISS recently, the information in that publisher's listing may not be up to date.

Publishers Who Have Ceased Operations

The Canadian ISBN Publishers' Directory is a complete record of all publishers who have registered with the Canadian ISBN Agency, including publishers who have ceased operations. As the information becomes available, records in the directory are updated to indicate that a publisher has ceased operations.

Information in the Directory Listings

Each listing in the directory gives the publisher's name and postal address, plus telephone and fax numbers, and email address where applicable. If the publisher has a website, a link to that site is also included.

The publisher information is displayed in the following order:

  • Publisher name
  • Address
  • Phone numbers
  • Email and website addresses (if applicable)
  • ISBN Prefix

ISBN Prefix(es)

The ISBN prefix assigned to a publisher is shown in every listing of that publisher. If a publisher has been assigned more than one ISBN prefix, all prefixes are displayed, separated by a semicolon.

Each ISBN prefix contains a hypertext link to the ISBN file in AMICUS (Library and Archives Canada's online catalogue). If Library and Archives Canada has catalogue records for any of a publisher's publications, those ISBNs are included in the ISBN list shown in AMICUS.

To view Library and Archives Canada's catalogue records associated with a publisher, select any ISBN that begins with that publisher's prefix.

To return to the Canadian ISBN Publishers' Directory, use your Web browser's "Back" button.

Further Information

For more information about ISBNs, please contact:

Canadian ISBN Agency
Library and Archives Canada
395 Wellington Street
Ottawa, ON  K1A 0N4
Telephone: 819-994-6872
or 1-866-578-7777 (Select 1+7+3) (Toll free in Canada)
Fax: 819-934-6777