Astonomy Clubs of Ontario
The Royal Astronomical Society of Canada - La Société Royale d'Astronomie du Canada
Barrie Astronomy Club
Bruce County Astronomical Society
Deep River Astronomy Club
Durham Region Astronomical Association
Elliot Lake Astronomy Club
Hamilton Amateur Astronomers
North York Astronomical Association
Ottawa Valley Astronomy & Observers Group
Timmins Astronomy Club
York University Astronomy Club
Astonomy Clubs World Wide