Ontario Canada GIS Resources

Province of Ontario open data portal

Ministry of Natural Resources – http://www.mnr.gov.on.ca/en/STEL02_168321.html
GLIN (Great Lakes Information Network) http://gis.glin.net/
LIO (Land Information Ontario) http://www.mnr.gov.on.ca/en/Business/LIO/
Ontario Basic Mapping (OBM) site by the Geography Network http://www.geographynetwork.ca/website/obm/viewer.htm
CLAIMaps – An interactive mapping tool that provides information on mining claims in Ontario, provides the ability to download map images as well as data in SHP format http://www.mndm.gov.on.ca/en/mines-and-minerals/applications/claimaps
Brampton, Ontario – http://open.brampton.ca/
Cambridge, Ontario – Grand River Conservation Authority https://data.grandriver.ca/downloads.html
Durham Region, Ontario –  http://opendata.durham.ca/
Grey County, Ontario – http://opendata.grey.ca
Haldimand County, Ontario – http://opendata.haldimandcounty.on.ca
Halton, Ontario – http://openhalton.ca
Huron County, Ontario – https://data-huron.opendata.arcgis.com/
Mississauga, Ontario – http://data.mississauga.ca/Canadian Open Data / Canadian GIS Data - Falls Viewer
North Frontenac, Ontario – http://data.nftwp.opendata.arcgis.com
Peel Region, Ontario – http://opendata.peelregion.ca
St.Catharines, Ontario – included with the Niagara Open Data website (https://niagaraopendata.ca)
Waterloo, Ontario (City of Waterloo) – http://opendata.waterloo.ca
The University of Toronto Open Data Catalogue contains various data sets http://maps.library.utoronto.ca/cgi-bin/open.pl?display=all