John McKenzie House with Banner and OHS logo

Founded in 1888, The Ontario Historical Society is a non-profit corporation and registered charity; a non-government group bringing together people of all ages, all walks of life and all cultural backgrounds interested in preserving some aspect of Ontario's history.


The Ontario Historical Society shall:

  • Promote among the citizens of the Province of Ontario the preservation and appreciation of its heritage
  • Unite the various historical societies of the province in one central organization, so as to promote communication, interchange of ideas and cooperation among them
  • Encourage the formation of new historical societies that promote the history of Ontario, and to enhance and extend their influence in the province
  • Cooperate with individuals, societies, institutions, and government agencies
  • Undertake projects of any nature to encourage and develop the study and preservation of that heritage, including the publication of the scholarly peer-reviewed journal, Ontario History

The OHS has a provincial mandate, but its headquarters is located at the historic John McKenzie House (built 1913) in Willowdale, Ontario. 

John McKenzie House, and its adjacent stables and milk-house are all designated under the Ontario Heritage Act. The OHS is governed by an all-volunteer board of directors, and is supported by and supports its vast network of member individuals, organizations and institutions, including the OHS's 350+ affiliated societies.

Choose one of the options at right to learn more about The Ontario Historical Society.


34 Parkview Avenue
Willowdale, Ontario, M2N 3Y2

P. 416-226-9011 | F. 416-226-2740

Toll-free: 1-866-955-2755
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