LAWYER PROFILE

Thomas Isaac

Global 2026

Cassels Brock & Blackwell LLP

Ranked in 1 practice area

Aboriginal Law

Canada

15 years ranked

About

Provided by Cassels Brock & Blackwell LLP

Practice Areas

Nationally recognized authority in Aboriginal law. Advises industry clients and governments across Canada on aboriginal legal matters, and related environmental assessment, regulatory, negotiations, and constitutional issues. Has appeared before the Supreme Court of Canada, B.C. Court of Appeal, Ontario Energy Board, among others. Publications: Aboriginal Law, 6th (2024); The Law of Indigenous Ownership and Projects (2024); Aboriginal Law: Supreme Court of Canada Decisions (2016) and Aboriginal and Treaty Rights in the Maritimes: The Marshall Decision and Beyond, and numerous other books, articles, and reports. Bar Associations: Alberta, 2006; British Columbia, 2001; New Brunswick, 2021; Northwest Territories, 2003; Ontario, 2019; Saskatchewan, 2019, and Yukon, 2010. Serves as Chair of the firm’s Aboriginal Law Group.

Chambers Review

Provided by Chambers

Chambers Global Guide

Aboriginal Law - Canada

Band 1

Individual Editorial

Thomas Isaac is a highly esteemed litigator with considerable experience acting for governmental and corporate clients on contentious and constitutional matters, in addition to providing advice on a raft of regulatory matters. He chairs the firm's Aboriginal law group from its Vancouver office.

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Strengths

Provided by Chambers

Tom is very knowledgeable in his field. He is very responsive and very aware of the politics and surrounding landscape.
Aboriginal LawChambers Global Guide
Tom has worked on a variety of projects across the country. He is called in a number of provinces, so is able to tell us what the trends are everywhere, which is a huge asset for us.
Aboriginal LawChambers Global Guide
Tom is extremely knowledgeable. He is probably THE expert in Canada on Aboriginal affairs. He is well-versed, knowledgeable and deals with things efficiently and quickly.
Aboriginal LawChambers Global Guide
Tom brings practicality to difficult problems through his wealth of knowledge and expertise in the Aboriginal law area.
Aboriginal LawChambers Global Guide
Tom is a legend. He has an incredible amount of experience and doesn't sugarcoat things and is willing to lay it all out on the line. He is responsive and willing to be a sounding board.
Aboriginal LawChambers Global Guide