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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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

Mississauga South HS March 2020 Meeting

March 17 @ 7:00 pm
Lorne Park Library, 1474 Truscott Dr.
Mississauga, Ontario L5H 4J3 Canada

Hockley Historic Community Hall & Church 2020 Annual General Meeting

May 26 @ 7:00 pm
Hockley Community Hall, 994174 Mono-Adjala Townline
Mono, Ontario L0G 1L0 Canada
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A great article about the Ontario Historical Society's work preserving John McKenize House in Willowdale. Thank you, Susan and @torontodotcom !


Congrats to Carol White and Wayne Hugli of Ontario Heritage Fairs @ONHeritageFairs on receiving the @LGLizDowdeswell Ontario Heritage Lifetime Achievement Award. A well-deserved show of recognition for these two heritage/education champions!

OHS member Edith George has been leading the charge to save this historic oak tree in Etobicoke for several years now. They are so close and are asking for your help. To donate, please follow the link below and click on the tab labelled "Where to Give".


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:


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