Nadia Campion

T 416 642 3134 F 416 598 3730
Nadia’s tenacity and extensive courtroom experience instill confidence in her clients. Unwavering in her commitment to delivering results, she identifies and implements effective and creative strategies to achieve her clients’ goals.

Nadia has a broad civil litigation practice that includes complex commercial disputes, shareholder oppression applications, director and officer liability, estates matters, class actions and professional liability. She has extensive trial experience, having acted as counsel in trials, arbitrations and administrative hearings involving a number of industries and subject-matters, including corporate and shareholder disputes, professional liability, regulatory matters and corporate fraud. She has appeared repeatedly before the Superior Court of Justice and the Ontario Court of Appeal, as well as the Ontario Securities Commission and the Investment Industry Regulatory Organization of Canada (IIROC). She has particular expertise in Toronto Commercial List proceedings and has an active land development and real estate litigation practice.

Nadia has both Canadian and U.S. law degrees and is also fluent in French, representing clients from Quebec and Montreal. In 2019, Nadia was ranked by Lexpert and by Benchmark Litigation as one of Canada’s leading lawyers under the age of 40. She has also been repeatedly recognized in Chambers Canada and Best Lawyers Annual Guide for securities and corporate-commercial litigation. Nadia is known in the community as a frequent speaker, writer and commentator on a variety of legal topics for the Law Society of Ontario, the Ontario Bar Association, the Advocates’ Society, The Lawyer’s Daily, the Law Times and Corporate Disputes Magazine. She was reelected to the OBA’s executive committees for class actions and civil litigation for a second term.

Community Involvement & Associations

  • L’Association des juristes d'expression française de l'Ontario, Frequent Speaker
  • Advocates’ Society, Frequent Speaker
  • Ontario Bar Association, Executive Committee Member
  • Trial Lawyers Association, Frequent Speaker
  • Women’s White Collar Criminal Defense Association
  • LPP Trial Advocacy Program, Instructor


  • Called to the Ontario Bar, 2006
  • B.A. (with Honours), McGill University (Top 5%)
  • LL.B, University of Ottawa (Magna Cum Laude)
  • JD, Michigan State University (Summa Cum Laude)
  • Certificate in Civil Law from Universidad de Panamericana in Mexico
  • Clerkship: Superior Court of Justice (Ottawa)
  • Objection, Your Honour!

    June 2020

    Nadia presented Objections at Trial: Special Considerations

    The Advocates' Society

  • Litigation Contract Disputes

    June 2020

    Nadia demonstrated Presenting and Testing the Evidence at Trial.

    The Advocates' Society

  • A Deep Dive into Injunctions and Extraordinary Remedies

    December 2019

    Nadia co-chaired a half-day program on strategic thinking behind the use of injunctive and other relief in the commercial litigation context. 

    Ontario Bar Association

  • 11th Annual Class Actions Colloquium: The Practical Side of Litigating Class Actions: Experiences, Challenges and Lessons Learned

    December 2019

    Nadia co-chaired a full day class actions program, including moderating a panel of judges providing practical tips and insights to litigation class actions.

    Ontario Bar Association

  • ADR Advocacy: Advanced Techniques

    November 2019

    Nadia Campion demonstrated the wrong way and the right way to present Closing Submissions in the ADR context. 

    The Advocates' Society

  • Discoveries: An Update for Litigators

    October 2019

    Nadia Campion was part of a panel discussion on examinations for discovery and how to get the most from the process.

    Law Society of Ontario

  • Prosecuting and Defending Professional Discipline Cases

    April 2019

    Nadia Campion presented on Ethical and Professional Issues in Professional Discipline Practice.

    Osgoode Professional Development

  • Civil Litigator’s Survival Guide to Evidence

    April 2019

    Nadia Campion presented on Relevance, Probity and Persuasion in the Courtroom.

    Osgoode Professional Development

  • One-Judge Civil Case Management Pilot

    February 2019

    Nadia Campion presented on the new civil case management pilot, including how to qualify for the pilot, the benefits of participating in the pilot and the importance of the pilot in managing judicial resources. 

    Ontario Bar Association

  • Cross-Examination: Strategies for Success

    January 2019

    Nadia Campion presented on Objections, Impeachment and Demonstrative Evidence

    Advocates’ Society

  • Evidence Essentials for Litigators

    January 2019

    Nadia Campion presented on Relevance and Materiality.

    Law Society of Ontario

  • Advanced Civil Litigation Program

    November 2018

    Nadia Campion presented on the origins and application of law of fiduciary duty.

    Toronto Lawyers Association

  • Commercial Litigation on the Commercial List

    June 2018

    Nadia Campion presented at the Commercial List Users’ Committee Annual Retreat.

    Commercial List User’s Committee

  • Testing the Reliability of Video Evidence

    June 2018

    Nadia Campion presented at the OBA’s Essential Evidence Series for Estate Litigators.

    Ontario Bar Association

  • L’exécution de bonne foi: Mettez-pas la charrue avant les boeufs!

    June 2018

    Nadia Campion presented in French at the AJEFO Congrès Annuel.

    Association des juristes d’expression francais

  • Presenting and Testing Evidence at Trial

    June 2018

    Nadia Campion presented at the Litigating Contract Disputes Program.

    Advocates’ Society

  • Global and Cross-Broder Issues in Class Proceedings

    June 2018

    Nadia Campion presented at the 2018 Canadian Regional Meeting.

    International Association of Defense Counsel

  • Year in Review: Key Developments

    April 2018

    Nadia Campion presented at the Advocates’ Society Spring Symposium.

    Advocates’ Society

  • The Rise of High-Stakes Global Class Actions

    February 2018

    Nadia Campion presented at the OBA Institute on Class Actions and International Law.

    Ontario Bar Association

  • How to Survive and Thrive in the Age of Digital Litigation

    February 2018

    Nadia Campion co-chaired the OBA Institutes on Civil Litigation.

    Ontario Bar Association

  • The Supreme Court of Canada’s Expansion of Contractual Obligations for Businesses

    January 2018

    Nadia Campion presented on the Duty of Good Faith and Contractual Performance of Contracts.

    The Business Women’s Network of York Region

  • Putting Theory into Practice: Professionalism and Civility

    December 2017

    Nadia Campion presented at Conference on Civility.

    Advocates’ Society

  • Mastering Winning Discovery Techniques

    November 2017

    Nadia Campion presented at Conference on Strategic Considerations when Preparing for Discovery.

    Advocates’ Society

  • In the Courtroom: Evidence Refresher for Litigators

    November 2017

    Nadia Campion presented at Conference on the Rules of Evidence.

    Ontario Bar Association

  • Securities Litigation in the Regulatory Environment

    October 2017

    Nadia Campion moderated Conference on Securities Law.

    Ontario Bar Association

  • Tackling Injunctions

    May 2017

    Nadia Campion presented at Conference on Injunction Strategies and Procedures.

    Ontario Bar Association Conference

  • The Ethics of Negotiating Settlements: What are the Rules?

    April 2017

    Nadia Campion presented at Conference on Settlements and Releases.

    Law Society of Upper Canada

  • Lawyers and Experts: Rules of the Game

    March 2016

    Nadia Campion presented to Duff & Phelps experts on Expert Reports.

    Duff & Phelps Seminar

  • Your First Civil Trial

    March 2013

    Nadia Campion presented at Conference on Trials, Summary Trials and Summary Judgments.

    OBA Professional Development Conference

  • What’s New and Exciting in the World of Defamation Law

    March 2012

    Nadia Campion moderated Conference on Defamation Law.

    Canadian Bar Association Conference

  • Civility and Professionalism in the Discovery Process

    March 2012

    Nadia Campion presented at Divine Discoveries Conference.

    OBA Professional Development Conference

  • Summary Judgment: Do you have a full appreciation?

    February 2012

    Nadia Campion moderated National Audio-Conference.

    Canadian Defence Lawyers Association

  • Civility in the Discovery Process

    October 2011

    Nadia Campion presented at Dialogue with the Bench and Bar: Tools and Tactics to Improve your Advocacy Skills.

    OBA Professional Development Conference

  • Canadian Lexpert® Directory, 2020: Litigation - Corporate Commercial; Litigation - Securities; Class Actions
  • Benchmark Litigation Star, 2020: Commercial Litigation, Insurance, Professional Liability
  • Chambers Canada 2020: Up and Coming - Litigation: General Commercial (Ontario)
  • The Best Lawyers™ in Canada, 2020: Corporate and Commercial Litigation; Securities Law
  • Benchmark Litigation Future Star, 2019: Commercial Litigation, Insurance, Professional Liability
  • Benchmark Litigation 40 & Under Hot List, 2019
  • The Best Lawyers in Canada, Securities Litigation, 2019
  • Canadian Lexpert® Directory 2019:  Litigation - Corporate Commercial
  • Lexpert Rising Stars, 2018
  • Benchmark Litigation 40 & Under Hot List, 2017-2018
  • The Best Lawyers in Canada, Securities Litigation, 2015-2018