Sara Mainville


(416) 981-9354
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Sara Mainville is a Partner at OKT.

Sara works with First Nations as legal counsel, strategic advisor and negotiator. She has been called to the Ontario bar since 2005.

Sara Mainville has a Management degree (Lethbridge) and a LL.B. (Queen’s).  Sara has earned a LL.M (Toronto) and her thesis, “An Anishinaabe Perspective of Treaty #3” was the beginning of a lifetime of study by her regarding Treaty #3 and Indigenous jurisdiction’s important role in legally reconciling Indigenous sovereignty in Canada.

In 2014, Sara was elected Chief of Couchiching First Nation. During that term she ensured that the First Nation had strong policy going forward and she started the Wasaw group of companies. Sara Mainville is also very proud of her participation in the negotiations that led to the creation of the First Nation Sovereign Wealth LP, a partnership of 129 First Nations in Ontario.  Sara was co-chair in the negotiations that resulted in the commercial transaction between the Province of Ontario and the First Nations of 14 million Hydro One shares and $29 million in seed capital to facilitate long-term wealth creation. 

Sara has advised First Nations on their own cannabis control laws in 2018 and 2019.  She is well regarded as a strategic thinker and negotiator and is often speaking at various conferences and First Nation forums about emerging legal issues.

Sara is listed as "Most Frequently Recommended" in Indigenous Law by Lexpert.

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