The Grand Lodge of Ancient Free and Accepted Masons of Canada in the Province of Ontario has jurisdiction over 480 Masonic Lodges, with approximately 26,000 members and is divided into 40 districts, with the Toronto Don Valley District being home to 17 Masonic Lodges.

The Toronto Don Valley District, encompassing what used to be the Town of York in the Province of Upper Canada, is steeped in a long and deep history dating back to the founding of Masonry in Canada. 

Toronto Don Valley District Freemasons covers the central part of the GTA and includes the City of Toronto proper with its boundaries spanning from the Don River Valley (DVP & 404) to Dufferin Street, and the waterfront to Thornhill.