Recognized in Best Lawyers since 2019 
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 counsel at the trial and appellate levels as well as before domestic and international arbitral tribunals.
A Fellow of the American College of Trial Lawyers, Sarah is consistently recognized as a leading litigator by legal directories, and is also a Fellow of the Litigation Counsel of America and a member of the International Association of Defence Counsel (IADC).
Committed to promoting excellence in advocacy, Sarah is a frequent presenter and mentor with The Advocates’ Society, instructing fellow advocates on skills essential to class actions, commercial litigation, arbitration and advocacy. She has also been recognized for her volunteer contributions to the University of Toronto Faculty of Law and served as a Director of the University of Toronto Alumni Association.
Sarah dedicates significant time to pro bono work and co-chairs Fasken’s Ontario Pro Bono Committee. She also served as a Director and Chair of Pro Bono Ontario. Her advocacy for children with disabilities has helped address unlawful conditions that kept them out of school or without appropriate special education services. In recognition of her contributions to pro bono legal services, Sarah received the Ontario Bar Association’s David Scott Award for Pro Bono Law.
