Office of the Prime Minister: Official site featuring announcements, news releases, and fact sheets. Available in English and French.
Prime Ministers of Canada - 1867 to Date: Chronological listing includes term dates and political affiliations.
Right Hon. Stephen Harper: Member of Parliament Profile for the current Prime Minister of Canada.
The Right Hon. Paul Edgar Philippe Martin: Brief biographical, political, and cultural data.
Wikipedia - Prime Minister of Canada: Offers information on qualifications, selection and term, as well as a list of former Prime Ministers.