Isabelle Crew

Isabelle Crew

Associate, Litigation; Regulatory, Environmental, Indigenous and Land

Contact Information

tel: 416.862.4222



Bar Admission

Ontario, 2019


  • Queen’s University, Juris Doctor
  • Carleton University, Bachelor of Arts Honours



Isabelle is an Associate in Osler’s Litigation Department and a member of the firm’s Regulatory, Environmental, Indigenous and Land practice group. In addition to her general corporate commercial litigation practice, Isabelle maintains a regulatory practice which involves advising business on matters related to indigenous, environmental and energy laws, with an emphasis on indigenous, administrative, energy, and environmental litigation.

Prior to joining Osler Isabelle worked at the Ontario Ministry of Energy Legal Services Branch, where her work focused on Indigenous consultation matters and other regulatory matters related to major infrastructure developments.

Isabelle completed her Juris Doctor at Queen’s University. Prior to attending law school, she obtained a Bachelor of Arts Honours in Law from Carleton University.

  • Kinross Gold Corporation

    Kinross Gold Corporation in its US$1.4 billion acquisition of Great Bear Resources

  • Imperial Oil

    Imperial Oil in its pipeline approval (leave to construct) from the Ontario Energy Board

  • A Canadian energy company in environmental permitting, land acquisitions, and land use planning and development matters related to an electricity generation project subject to overlapping federal, provincial and municipal jurisdiction

    A variety of private and public landowners with issues relating to the remediation of contaminated lands and legal advice regarding environmental indemnity risks and obligations

    Various Canadian energy and mining companies regarding duty to consult obligations, environmental assessments and permitting matters

    Numerous Canadian and international clients with corporate governance, mergers and acquisitions, restructurings, financings, public offerings and other corporate transactional advice on environmental matters, including due diligence, advice regarding regulatory/environmental liabilities, and drafting terms and conditions.


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  • Queen’s Law Prize in Contracts; Queen’s University
  • Queen’s Law Prize in Administrative Law, Queen’s University
  • John D.B. Walton Scholarship in Administrative Law; Queen’s University
  • Christopher Riggs Administrative Law Scholarship; Queen’s University
  • Queen’s Law Prize in International Trade Law, Queen’s University
  • Leipnik Award in International Legal Studies, Queen’s University
  • Dean’s Honour List, Queen’s University
  • Senate Medal for Outstanding Academic Achievement, Carleton University
  • Governor General’s Academic Medal, Bronze

  • Pro Bono Law Ontario, Duty Counsel Volunteer
  • First Generation Network, Mentor
  • Queen’s Law Journal, Editor in Chief, 2017-2018
  • Queen’s Faculty of Law Aboriginal Law Student Alliance, Founding Council Member

  • Law Society of Ontario
  • Ontario Bar Association
  • Canadian Bar Association

  • “Environmental Regulatory Orders in the Wake of Redwater: Addendum” by Jennifer Fairfax, Patrick Welsh and Isabelle Crew, Key Developments in Environmental Law 2020 (Toronto: Thompson Reuters, 2020).
  • “Canada Targets Implementing a Comprehensive Ban on Asbestos and Asbestos-Containing Materials by 2018” by Jennifer Fairfax, Patrick G. Welsh, Rebecca Hall-McGuire and Isabelle Crew, Key Developments in Environmental Law 2017 (Toronto: Thompson Reuters, 2017).