Canada Gazette, Library and Archives Canada. Often referred to as the “official newspaper of the Government of Canada.”

Canadiana, periodicals, annuals and newspapers.

Canadian Newspapers and WWII
This collection of more than 144,000 newspaper articles, manually clipped, includes news stories and editorials from newspapers, mostly Canadian, documenting every aspect of WWII.

Canada Online Historical Newspaper Links, The Ancestor Hunt.

Google Newspapers

Historical Canadian Newspapers Online, Bowling Green State University

Historic Newspapers, CanGenealogy

Wikipedia: List of online newspaper archives, listed by country and province

Alberta Newspaper Clippings Catalogue, Glenbow Museum

Alberta Newspaper Collection, The Alberta Heritage-Digitization Project

Calgary, Alberta Newspaper Records of BMDs database, Alberta Family Histories Society

Edmonton Newspaper Obituaries, 1950=1982 (index only), Edmonton Public Library

Our Future Our Past, Alberta newspaper collection

Peel’s Prairie Provinces Newspapers, University of Alberta

Southern Alberta Newspaper Collection, University of Lethbridge

British Columbia
BC Historical Newspapers, University of British Columbia

BC Newspapers, British Columbia Genealogical Society

The Bill Silver Digital Newspaper Archive, three Vanderhoof, British Columbia newspapers

The British Colonist, 1858-1951, Victoria, British Columbia

Thompson-Nicola Region newspapers, Newshound

Peel’s Prairie Provinces Newspapers, University of Alberta

Manitoba newspapers, Digital Resources on Manitoba History

Manitoba newspapers, University of Manitoba

Peel’s Prairie Provinces Newspapers, University of Alberta

The Manitoban, 1914-2012, University of Manitoba student newspaper

Winnipeg Tribune, 1890-1980

New Brunswick
Daniel F. Johnson’s New Brunswick Newspaper Vital Statistics, 1784-1896, Provincial Archives of New Brunswick

Nova Scotia
Nova Scotia Historical Newspapers, Nova Scotia Archives

Newfoundland Newspapers, Memorial University

Kingston, Ontario newspapers, 1810-1849, DigitalKingston

Ontario Community Newspapers

Our Ontario Newspapers Index, 200 years of Ontario newspapers

Prince Edward Island
Island Newspapers, 1832-1990, University of Prince Edward Island

The McGill Daily, 1875-1910, University of McGill student newspaper

The Quebec Chronicle, 1898-1924, Bibliothèque et Archives nationales du Québec

Quebec Gazette, government publication, Bibliothèque et Archives nationales du Québec

Quebec Newspapers and Magazines, Bibliothèque et Archives nationales du Québec ((To access, click on Accéder in blue box on left side)

Peel’s Prairie Provinces Newspapers, University of Alberta

Saskatchewan Historic Newspapers Online, Provincial Archives of Saskatchewan

Other countries
Fulton History primarily New York and area

Trove, National Library of Australia