CANSIM II (Canadian Socio-Economic Information Management System)
Over a million time series covering Canadian social and economic life.
Statistics Canada A combination of free and fee-based material (see also CANSIM II)
GD Sourcing: Research and Retrieval
A directory of social, environmental and economic statistics from both government and non-government sources.
Trade
Canadian Competition Policy Page (CCPP) - A Site Devoted To the Dissemination of Information On Competition Law and Economics in Canada and Around the World