Terri-Lee Oleniuk

Partner, Blake, Cassels and Graydon LLP

Energy industry project lawyer with deep expertise in energy regulatory, environmental and Aboriginal law issues. Advises major corporations in obtaining approvals for oil and gas, pipeline, mining, hydro, solar and wind projects. Negotiator of impact benefit agreements with First Nations and Metis groups.


Amanda Heale and Terri-Lee Oleniuk named 2016 Lexpert Rising Stars

Lexpert Rising Stars: Leading Lawyers Under 40, November 18, 2016Online

URL: http://www.lexpert.ca/article/2016-rising-stars-leading-lawyers-under-40/

Osler congratulates Amanda Heale and Terri-Lee Oleniuk on being recognized as Lexpert Rising Stars – Leading Lawyers Under 40 for 2016.


New pipeline regulations won’t deter projects, lawyers say

Financial Post, November 7, 2016Online

URL: http://business.financialpost.com/news/new-pipeline-regulations-wont-deter-projects-lawyers-say?__lsa=291c-b8d1

In an article in the Financial Post, Julius Melnitzer addresses the impact that new federal regulations will have on companies in the oil and gas sector. The provisions are intended to ensure that pipelines have enough funds readily available to deal with the consequences of oil and gas spills. Melnitzer gains insight for the article from Terri-Lee Oleniuk, a partner in Osler’s Calgary office who practises in the firm’s Regulatory, Environmental, Aboriginal and Land Group.

CERI panel tackles the role of public trust in pipeline approvals

Daily Oil Bulletin, March 18, 2016Online

URL: https://www.osler.com/en/about-us/press-room/2016/new-pipeline-regulations-won-t-deter-projects-law

In her article “CERI panel tackles the role of public trust in pipeline approvals” for the Daily Oil Bulletin, Elsie Ross reports on the issues raised by panel members at a Canadian Energy Research Institute (CERI) oil and gas symposium held in March. Terri-Lee Oleniuk, a Calgary-based partner at Osler who specializes in regulatory, environmental, Aboriginal and land law, spoke as a panel member at the symposium.

Recent Regulatory and Legislative Developments of Interest to Energy Lawyers (co-author)

Canadian Energy Law Foundation 2015 Jasper Research Seminar, December 1, 2015Online

URL: http://www.albertalawreview.com/index.php/ALR/article/view/411

Published in the Alberta Law Review Vol 53, No. 2 (December 2015) 529
This article provides a high level overview of regulatory and legislative developments relevant to energy lawyers. The authors reviewed regulatory initiatives, decisions, related case law, and legislation from provincial, territorial, and federal authorities. Topics of note include pipeline regulation with a focus on recently proposed projects, Aboriginal law, liquefied natural gas, oil and gas development, renewable energy, and power and environmental protection. The period covered is May 2014 to April 2015, inclusive.

What to know about the new Extractive Sector Transparency Measures Act

Alberta Oil, May 1, 2015Online

URL: https://www.albertaoilmagazine.com/2015/05/the-ask-terri-lee-oleniuk-osler-extractive-sector-transparency-measures-act/

Terri-Lee Oleniuk explains how the new federal act will affect relationships between First Nations and the energy sector.

Alberta’s Climate Change Leadership Plan (co-author)

American Bar Association’s Section of International Law, January 1, 2015Online

URL: http://www.albertalawreview.com/index.php/ALR/article/view/411

The Year in Review (SMU Dedman School of Law) 590-593

Alberta’s Climate Change Leadership Plan (co-author)

American Bar Association’s Section of International Law, The Year in Review (SMU Dedman School of Law) 590-593Online


Terri-Lee Oleniuk practices regulatory, environmental, and Aboriginal law in Western Canada. She represents clients that are proponents of major natural resource development and infrastructure projects. These projects represent Canada’s largest, most important and complex projects and have multiple stakeholder interests. Terri-Lee advises her clients on environmental and aboriginal law issues and advocates on their behalf in front of various regulatory tribunals. She is known for her creative, collaborative approach to solving complex issues; Oleniuk was named a Lexpert Rising Star: Leading Lawyer under 40 in 2016.


Recognized as a leading lawyer in: | Professional

• The Best Lawyers in Canada, 2018
• The Lexpert Guide to the Leading US/Canada Cross-Border Corporate Lawyers in Canada, 2017, Corporate Lawyers to Watch
• The Canadian Legal Lexpert Directory, 2017

Additional Titles and Affiliations

• Law Society of Alberta
• Law Society of the Northwest Territories
• Law Society of British Columbia
• Canadian Bar Association
• Calgary Bar Association

Past Talks

Overlapping Environmental Jurisdiction for Federally-Regulated Projects in Canada: Walking a Fine Line (Speaker)

Alberta Environmental Law Section

Canadian Bar Association, February 1, 2017

Changing Sound Requirements in Canada – Implications for Planning and Operations, Alberta: A Legal Perspective

CanWEA Annual Conference & Exhibition

Calgary, November 1, 2016

Uncertainty in environmental regulations – a legal perspective on the environmental approval process for pipeline projects

International Pipeline Conference and Exposition

Calgary, September 1, 2016

Dealing with Indigenous Communities: Law and Best Practices, The Osgoode Certificate in Mining Law

Osgoode Hall Law School

York University, April 1, 2016

Market Access and Global Competitiveness, Consent of Indigenous People: Challenges and Opportunities

Canadian Energy Research Institute 2016 Oil & Gas Symposium

Calgary, March 1, 2016

Alberta – The Next Frontier for Renewable Energy? (Speaker)

Osler’s National Renewable Energy Group – in Toronto

Toronto, January 20, 2016

Proponent, Landowner and Aboriginal Perspectives on the Trend Away from Oral Hearings

Alberta Environmental Law Section

Canadian Bar Association, December 1, 2015

Extractive Sector Transparency Measures Act - Are you on the right track? (Speaker)

Association of Corporate Counsel (ACC) / Osler

Toronto, November 19, 2015

Disclosure and Anti-Corruption Issues when Dealing with Aboriginal Groups

Aboriginal Law Conference

Continuing Legal Education Society of BC, November 1, 2015

Be a Rainmaker: Women Succeeding in Law (Panelist)

Calgary Women Studying Law Association (CWSLA)

Calgary, October 15, 2015

Legal Perspectives Around Court Rulings and Consultation

Planning Institute of British Columbia

Vancouver, May 1, 2015

Who Qualifies as an “Expert” in Canadian Environmental Cases

Evidentiary Issues in Environmental Prosecutions and Hearings, Canadian Institute of Resources Law/Canadian Bar Association’s National Environmental, Energy and Resources Law Summit and the Symposium on Environment in the Courtroom

University of Calgary, March 1, 2015


  • Energy projects
  • Aboriginal law
  • Environmental law
  • Resource development
  • Infrastructure
  • Renewable energy
  • Environmental assessments
  • Regulatory proceedings


  • University of Saskatchewan
    J.D. (with distinction)

  • University of Saskatchewan
    B.Sc. (Physiology)