Preserving, Promoting, and Protecting Ontario's History From the Grassroots to the Scholarly JOIN NOW The Bishop's House, St. Raphael’s, courtesy Glengarry Fencibles Trust Exchanging Ideas, Research and Experiences Related to the Rich History of the Province LEARN MORE Kiinwi Dabaadjmowin (“Our Story”) mural, by Tracey Anthony and Philip Cote, courtesy The Harmony Collaboration, Mississaugas of New Credit First Nation Discussing a Wide Variety of Topics Related to our Province’s Past Ontario History A Peer-Reviewed Scholarly Journal LEARN MORE Porphyry Point Lighthouse, courtesy Canadian Lighthouses of Lake Superior Honouring Contributions to the Preservation and Promotion of Ontario’s Heritage Honours & Awards Established in 1967 LEARN MORE Bethel Union Pioneer Cemetery, Clearview Township, courtesy Silver Shoe Historical Society Ontario Heritage Directory & Map Organizations, Historic Sites, Museums, Libraries and More LEARN MORE Trinity Theatre youth Leadership Lab at Parkview Neighbourhood Garden, North York

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.

Become a member of the OHS to receive email updates, announcements, and news.

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Upcoming events across Ontario

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Shaping Sustainability in Ontario

July 28 @ 9:15 am - 6:40 pm
online, Canada

159th Annual Emancipation Festival

August 1 @ 12:00 pm - 1:30 pm
online, Canada

Emancipation Day Drive-Thru BBQ (Oakville)

August 1 @ 3:00 pm - 5:00 pm
Queen Elizabeth Park Community and Cultural Centre, 2302 Bridge Rd
Oakville, Ontario L6L 3L5 Canada

2021 Halton Freedom Celebration Festival

August 1 @ 5:00 pm - 7:30 pm
online, Canada

2021 Emancipation Day Celebration

August 1 @ 6:00 pm - 7:30 pm
online, Canada
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Just a quick reminder to all our members that this year's Annual General Meeting will once again be held later in the year. A final date and format will be provided to all OHS members shortly.

Announcing the launch of Ontario History journal's 2021 Spring issue! Enjoy five new articles and eight book reviews.

Congratulations to the 2020 Lieutenant Governor’s Ontario Heritage Awards recipients!

The awards recognize exceptional contributions to cultural and natural heritage conservation, environmental sustainability & biodiversity. Learn more: #ONHeritageWeek

The OHS is thrilled to announce that last night the Society was presented with the LG's Ontario Heritage Award for Excellence in Conservation for the “Digitization and Sharing of Ontario History Journal” What an honour!

@ONheritage @LGLizDowdeswell


Excellent news coming out of Manitoulin today! Now an incorporated affiliate of the OHS, the Friends of Mindemoya Old School will look to take ownership (or long-term lease) of the building, hoping to prevent its demolition.

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