LAWYER PROFILE
Sarah Armstrong

Sarah Armstrong

Canada 2026

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Ranked in 2 practice areas

About

Provided by Fasken

Practice Areas

Sarah Armstrong is the Chair of Fasken’s Ontario Litigation and Dispute Resolution Practice Group. An adept and strategic litigator, Sarah combines skilled courtroom advocacy and sound judgment to represent clients who are involved in business-critical disputes.

Sarah navigates clients through complex commercial disputes and professional liability matters in both court and in arbitration. In the class action arena, Sarah has extensive experience managing and coordinating the defence of overlapping and multi-jurisdictional proceedings in securities, product liability, privacy and cybersecurity, insurance coverage and consumer cases. Sarah advises organizations across a wide array of industries including mining, professional services, insurance, health, automotive, retail and manufacturing. Sarah acts as lead and co-counsel at the trial and appellate levels as well as before domestic and international arbitral tribunals.

Chambers Review

Provided by Chambers

Chambers Canada Guide

Dispute Resolution: Class Action (Defence) - Nationwide - Canada

Band 3
Band 3

Individual Editorial

Sarah Armstrong attracts plaudits for her growing presence in Canada's disputes market, acting on both single-plaintiff and class actions. With a strong track record in cybersecurity and securities class actions, she also has notable experience in insurance-related cases. She is based in Toronto and leads the firm's Ontario litigation and dispute resolution practice group.

Litigation: General Commercial - Ontario

Band 6
Band 6

Individual Editorial

Sarah Armstrong is a partner in Fasken's Toronto office, and currently serves as the chair of Fasken's Ontario litigation and dispute resolution practice group. She is highly experienced in representing corporate clients in class action matters, as well as in professional liability and other commercial disputes.

Strengths

Provided by Chambers

  • Sarah Armstrong is a strong lawyer who is personable and attentive to the details.

    Dispute Resolution: Class Action (Defence)Chambers Canada Guide
  • Sarah is the whole package of expertise and wisdom. She focuses on the real issues and is strategic in the way that she advances her client's position.

    Dispute Resolution: Class Action (Defence)Chambers Canada Guide
  • Sarah is terrific.

    Dispute Resolution: Class Action (Defence)Chambers Canada Guide
  • She is very helpful in positioning us and has made it a positive experience.

    Litigation: General CommercialChambers Canada Guide
  • Sarah is a very smart and thoughtful lawyer.

    Litigation: General CommercialChambers Canada Guide

Ranked Individuals at Fasken (184)

Alberta

British Columbia

Nationwide - Canada

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