The Honourable Dennis O’Connor, O.C., Q.C.

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+1 (416) 848 0203
+1 (416) 850 5316 (fax)
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The Honourable Dennis O’Connor, O.C., Q.C., formerly the Associate Chief Justice of Ontario, is counsel in the Toronto Office of Borden Ladner Gervais LLP.  He was appointed to the Court of Appeal for Ontario in 1998 and served as Associate Chief from 2001 until he retired at the end of 2012.

While on the bench, Mr. O’Connor wrote numerous judgments dealing with a wide range of issues including commercial, insurance and securities law.  In addition, he conducted two successful public inquiries: The Walkerton Inquiry (2000-02) and the Maher Arar Inquiry (2004-06).

Before being appointed to the Court of Appeal, Mr. O’Connor was a senior counsel at Borden & Elliot in Toronto for 18 years.  His practice focused on commercial and public law litigation.  He acted on many major cases in Ontario and elsewhere in Canada during that period.  From 1980 to 1984 he acted as Chief Negotiator for the Government of Canada for Yukon Indian Land Claim.  He served as an elected bencher of the Law Society of Upper Canada from 1987 to 1995.

Since leaving the bench, Mr. O’Connor has devoted a significant amount of time to arbitrations and mediations covering a range of commercial, financial, valuation, contractual and estate issues.  He was appointed as an Officer of the Order of Canada in July 2016.  He is a member of the Toronto Commercial Arbitration Society and ICC Canada Arbitration Committee.  He was elected a fellow of the American College of Trial Lawyers in 1991.  He has been awarded several honourary degrees.  He has also received a number of awards, including the Advocates Society Medal, the Toronto Lawyers Award of Distinction, The Ontario Bar Association Award for Distinguished Service, the Society of Ontario Adjudicators and Regulators Medal, The Canadian Water Resources Association Distinguished Achievement Award and the American Waterworks Association Award of Merit.

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