Centre for Topographic Information (Sherbrooke)

Canada's national topographic mapping agency, responsible for establishing, updating, and distributing the National Topographic Data Base (NTDB), along with other raster and terrain data bases.
http://maps.nrcan.gc.ca/

National Atlas of Canada

The National Atlas of Canada is responsible for "the development and maintenance of an authoritative synthesis of the geography of Canada." Products include small-scale base maps and thematic maps of Canada and its provinces, in both digital and conventio
http://atlas.gc.ca/

GeoGratis

A web and ftp site that distributes geospatial data of Canada for free data download. Available data list, maps and download categories.
http://geogratis.gc.ca/