Tommy Tremblay

Key practice areas
Litigation and Dispute Resolution, Corporate Governance, Government Affairs, Corporate and Commercial Law, Business Succession
Québec Bar 2000

Tommy Tremblay’s practice encompasses every aspect of commercial litigation, with a focus on the business governance sector (especially director and officer liability), competition law, securities, and white-collar defence, including administrative investigations and interactions with regulatory agencies in these matters. His governance experience has led him to also acquire specialized expertise in government relations, including the laws governing political contributions and lobbying.

Tommy advises directors and officers regarding ethical corporate governance practices, specifically with respect to their duties and obligations towards various groups impacted by their decisions (e.g., shareholders, creditors, employees) and the obligations imposed on them by law.

Moreover, Tommy advises corporations and individuals on matters related to their obligations to prevent economic crimes and ensure compliance with competition law. He represents them before the courts in both penal and civil proceedings (including class actions) where they are accused of an offence or alleged to be liable for damages.

Tommy also helps develop compliance programs that make it possible for companies to verify whether their employees and members of their administration are complying with statutory rules and exercising due diligence in various areas, including competition law, fraud prevention, corruption and lobbying.

He frequently assists clients with investigations led by regulatory agencies and helps to set up internal investigation protocols for clients who suspect employees or executives of having committed irregularities (non-compliance with regulatory standards, fraud, etc.).

Tommy also appears before various decision-making bodies, such as administrative tribunals, the Superior Court and the Court of Appeal of Québec.

  • Canadian Legal Lexpert Directory – Directors and Officers Liability, 2016
  • Benchmark Litigation Canada:
    • Litigation Star, 2019-2024
    • Local Litigation Star, 2016-2018
  • Best Lawyers in Canada:
    • Corporate and Commercial Litigation, 2018-2024
    • Corporate Governance, 2022-2024
    • Directors and Officers Liability, 2023-2024


  • Canadian Bar Association:
    • President, Québec branch, 2020-2021 (outgoing President 2021-2022)
    • Honorary Member-at-Large, Business Law Section, since 2020
    • Member of the Anti-Corruption Team, since 2018
  • American Bar Association, Member of the Business Law section, since 2018
  • East Montréal Chamber of Commerce (CCEM):
    • Member of the Board of Directors, since 2022
    • Member, since 2018

Teaching engagements

  • Collège des administrateurs de sociétés, Trainer, since 2012
  • HEC Montréal, Executive Education, Trainer
  • Continuing Education Faculty of the Université de Montréal, Lecturer of the course The Law of Civil Investigation given in the context of a new program named Certificat en enquête et renseignement, since 2019
  • Collège des administrateurs de sociétés, Trainer – University certification in corporate governance program for many years
  • Réseau des jeunes administrateurs, Trainer – training program framed by the Young Chamber of Commerce of Montréal and the The Montréal Regional Conference of Elected Officials (CRÉ)
  • Co-speaker: Les modifications à la Loi sur la concurrence [Amendments to the Competition Act], Langlois Knowledge, webinar, December 17, 2022.
  • Co-speaker: “Rôle des administrateurs et du conseil : délimiter leurs devoirs et responsabilités” [The role of directors and the board: defining duties and responsibilities], Langlois Knowledge, webinar, September 23, 2021.
  • Panelist: Fraud and Corruption: Trends During Times of Crisis, organized by the Canadian Bar Association, Business Law Section, webinar, June 2, 2020.
  • Panelist: “Responsabilité pénale des entreprises : gouvernance et stratégie des entreprises en regard du régime de traitement alternatif de la criminalité” [The criminal liability of enterprises: corporate governance and strategy regarding the alternative treatment of economic crime], as part of the event Les rendez-vous juridiques 2018-2019, Faculty of law of Université de Montréal, Montréal, March 13, 2019.
  • Speaker: “Point de vue d’un praticien sur la criminalité économique et la gouvernance d’entreprise au Québec” [A practitioner’s point of view on economic crime and corporate governance in Québec], as part of the Discussion forum entitled La conformité et la gouvernance dans tous leurs états, Université Laval, Québec City, February 6, 2019.
  • Speaker and trainer on directors’ and officers’ liability, shareholders’ disputes, competition law, securities, as well as internal and regulatory investigations.
  • Speaker for several years at the Federated Press’ annual conferences Directors’ and Officers’ Liability and Reinventing the Corporate Secretary.
  • Speaker for the Canadian Bar Association – Québec Branch, together with other lawyers, in preparing annually a list of major decisions in commercial disputes.
  • Trainer in competition law, internal investigation processes in cases of fraud or irregularities, and rules governing lobbying for in-house training courses for clients.

Fellow of the Chartered Institute of Arbitrators (CIArb), 2018

ASC (Certified Corporate Director), Collège des administrateurs de sociétés, 2019

LL.B., Université Laval, 1998

B.A., Sociology, Université Laval, 1993