What We Do

Preserving, promoting, and protecting
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 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.

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East York Historical Society January 2020 Meeting

January 28 @ 7:00 pm
S. Walter Stewart, 170 Memorial Park Ave.
East York, ON M4J 2K5 Canada

Esquesing HS February 2020 Meeting: Vintage Acton – The Calendar Collection

February 12 @ 7:30 pm
Knox Presbyterian Church, 116 Main St. S.
Georgetown, ON L7G 3E6 Canada

The Craigleith Heritage Depot Leap Year Dance

February 29 @ 7:30 pm
Beaver Valley Community Centre, 58 Alfred St W
Thornbury, Ontario N0H 2P0 Canada
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Two weeks left to submit nominations for this year's OHS Awards!

Help the OHS recognize exceptional achievements in our sector. There are seven categories for outstanding achievement and seven categories for authors.

Submit your nominations here:


Please join for our Annual General Meeting on January 26 at the historic John McKenzie House (2-4pm)! Author Jane Fairburn will be our keynote speaker!

Congrats, @AliEhsassi MP (Willowdale) on your appointment as Parliamentary Sec. to Minister of Innovation, Science and Industry.

We thank Ali for his continued interest in OHS's historic John McKenzie House located in Willowdale and his passionate support for our work across ON

OHS ED Rob Leverty & Toby Barrett MPP (Haldimand-Norfolk) and Parliamentary Assistant to Minister of Agriculture, Food and Rural Affairs pose with OHS publication A Few Old Barns. OHS salutes Toby’s life-long interest in history and support for OHS's work across ON @TobyBarrettHN

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