Keith Marlowe, KC, is a veteran litigator whose broad practice focuses on corporate disputes, class actions, construction and infrastructure litigation and insurance coverage matters. Experienced in both courtroom advocacy and arbitration, he regularly acts in complex cases before Canadian courts and arbitration panels.
Keith has appeared as lead counsel before the Supreme Court of Canada and courts in Alberta, Saskatchewan, British Columbia, Manitoba and Ontario, as well as before courts in New York and Texas. Licensed to practise in multiple jurisdictions, including Alberta, Ontario, New York, Massachusetts, Washington, D.C., and England and Wales, Keith brings a diverse perspective to his legal practice.
Clients describe Keith as “smart, articulate, and an excellent litigator” and “probably the best guy I have seen in court.” In 2022, he was appointed King’s Counsel in recognition of his contributions to the legal profession and the community. He has been recognized by Chambers Canada, The Legal 500, The Canadian Legal Lexpert Directory, The Best Lawyers in Canada and Thomson Reuters.
Keith is Chair of the Legal Archives Society of Alberta and sits on the advisory board of the Dual JD Program at the University of Windsor and University of Detroit Mercy.
Awards and Recognition
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Chambers Canada: Recognized as “Up and Coming” in Insurance: Dispute Resolution, 2024–2025
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The Legal 500: Insurance, 2025
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The Canadian Legal Lexpert Directory: Recognized in Class Actions, 2023–2025
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The Best Lawyers in Canada: Director and Officer Liability, 2025; Alternative Dispute Resolution and Class Action Litigation, 2024–2025; Corporate and Commercial Litigation, 2022–2025
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Thomson Reuters: “Stand-out Lawyer,” 2019–2025
Media Mentions
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Osler News June 16, 2025
Keith Marlowe, KC, becomes a Fellow of the Litigation Counsel of America
Osler is proud to announce that Keith Marlowe, KC, has become a Fellow of the Litigation Counsel of America, an invitation-only honorary society...
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Osler News June 10, 2025
Keith Marlowe, KC, joins Osler’s Disputes group as a partner
Keith is a veteran litigator whose broad practice focuses on corporate and commercial disputes, including cross-border disputes and class actions.
Read more
Community Involvement
- Legal Archives Society of Alberta, Chair
- University of Windsor Faculty of Law and University of Detroit Mercy School of Law, advisory board member of dual JD program
Credentials
Education
- University of Detroit Mercy, JD
- University of Windsor, LLB
Languages
- English
Professional Affiliations
- Law Society of Alberta
- Ontario Bar Association
