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Andrea Wheeler listen


Andrea* knows litigation, providing insightful advice and experienced advocacy in professional liability and regulation matters, commercial disputes, and health law cases. In every case, Andrea works§ closely with her clients to get the best results. Prior to joining Lenczner Slaght, Andrea was a federal Crown at the Department of Justice, where she worked on complex and high-profile litigation at all levels of court, including the Federal Court of Appeal and the Supreme Court of Canada. Andrea’s diverse background is the reason why she always works smarter and finds creative solutions for her clients. Having been published in both legal and academic journals, she has the knowledge and drive to solve the toughest problems. .



Andrea Wheeler (she/her)

is a partner at Lenczner Slaght.

"Andrea is a natural and gifted litigator. She is smart, incisive, and has both instinct and insight as to how to prosecute a case and question witnesses." — Chambers Canada

Andrea is a skilled trial lawyer known for her business acumen, outstanding client service and excellent judgement. Andrea represents clients in complex and high-profile commercial disputes, construction and infrastructure matters, professional liability hearings and medical malpractice trials. 

Andrea provides real-time strategic advice to private and public sector clients and appears before all levels of court in Ontario, administrative tribunals and in private arbitrations.

Prior to joining Lenczner Slaght, Andrea was a federal Crown at the Department of Justice. Andrea also worked as a research psychologist and published numerous peer-reviewed articles in leading academic journals.

As a litigator, Andrea uses her diverse training to rigorously analyze her client’s problems and relentlessly drive to solutions.

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  • The Advocates' Society

  • Ontario Bar Association

  • Best Lawyers in Canada (2021-2024)

    Corporate & Commercial Litigation, Health Care Law

  • Canadian Legal Lexpert® Directory (2022-2024)

    Litigation - Corporate Commercial, Medical Negligence, Professional Liability

  • Lexpert Special Edition: Canada's Leading Infrastructure Lawyers (2024)

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