Greg Temelini

Direct: 416-479-9686
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Legal Education
Osgoode Hall Law School
Year of Call: Ontario 2002

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Greg has represented clients at the Supreme Court of Canada, trial and appellate courts across Canada, regulatory bodies, and the World Trade Organization in Switzerland. Greg has also served as an adjudicator in an international panel under the Canada-United States-Mexico Agreement.

As an experienced advocate, Greg litigates complex commercial cases involving novel issues. He represents a broad range of clients including governments, major financial institutions, large multi-national corporations, professional regulatory bodies, officers and directors, and various industry associations.

By way of example, Greg has represented a provincial government in an action alleging fraud and abuse of process. Greg has also represented various parties in an investigation by the Ontario Integrity Commissioner. Additionally, Greg has acted for the head of a provincial securities regulatory body in an action involving misfeasance in public office and issue estoppel. Greg also acted for the successful appellant in Antrim Truck Centre Ltd. v. Ministry of Transportation at the Supreme Court of Canada, a case which developed the tort of nuisance.

Greg routinely provides advice to clients in regulatory investigations, insider trading and other enforcement proceedings, and registration matters before financial regulatory bodies including the Ontario Securities Commission (OSC).

As part of his practice, Greg has developed an expertise in administrative law, judicial review and appellate advocacy. Greg has lectured and been published on these topics including in The Advocates’ Journal.

In addition to his litigation practice, Greg was recently appointed by the Canadian and U.S. governments as a panelist in a Binational Panel Review under the Canada-United States-Mexico Agreement. Greg’s panel judicially reviewed a decision of the Canadian International Trade Tribunal.

Prior to founding Wright Temelini LLP, Greg was a partner at a downtown Toronto litigation boutique. Greg started his career as counsel for the Trade Law Bureau of the Department of Foreign Affairs and International Trade and litigated for Canada at the World Trade Organization in international disputes.


Greg has chaired and instructed at numerous professional development programs including at the Law Society of Ontario and the Osgoode Hall Intensive Trial Advocacy Workshop. 

A full list of Greg’s speaking engagements is available on the Wright Temelini LLP website at this link.


Greg graduated from Osgoode Hall Law School in the top ten percent of his class. He was called to the Ontario Bar in 2002. He earned an honours degree with distinction from Wilfrid Laurier University.


Greg is a member of The Advocates’ Society, exeQutive, and the Canadian Italian Business and Professional Association of Toronto.