Best Lawyers in Ontario, Canada for Corporate and Commercial Litigation

Alistair Crawley is a founding partner of Crawley MacKewn Brush LLP and is one of Canada’s leading securities and corporate commercial litigation lawyers. Alistair’s practice includes all aspects of litigation and advice involving the capital markets and the securities industry, including investigations and enforcement hearings, contested corporate transactions and investment loss claims. Alistair has argued some of Canada’s most significant securities law cases, including t...

Andre is a partner in Ottawa and practices in both official languages. Andre’s practice primarily encompasses banking, insolvency and restructuring litigation, representing major financial institutions, including chartered banks, credit unions and trust companies, as well as licensed insolvency trustee firms. Andre has extensive experience in complex insolvencies, receiverships and restructurings, and has appeared at all levels of Court in Ontario in such matters, including Commercial L...

Andrew C. Lewis is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law, Corporate and Commercial Litigation and Labour and Employment Law. Andrew C., who practices law in Toronto, Ontario, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew C. is held by other top lawyers in the same geographic and legal practice area.

John helps clients solve their business and personal disputes: Corporate and Commercial Litigation - Business partner and shareholder disputes, breach of contract, environmental contamination disputes, franchise disputes, debt collection, commercial tenancy disputes, construction disputes, real estate disputes, product liability, bankruptcy and receiverships Estate Litigation - Disputes between heirs/beneficiaries and executors/estate trustees Sports Law - representing amateur hockey and othe...

One of Canada’s leading litigators, Gillian is renowned for her empathy, fearless advocacy, and dedication to her clients. Gillian maintains a diverse civil litigation practice involving administrative and public law, professional liability (as preferred counsel for LAWPRO), health law, employment law, and general commercial litigation. Most notably, Gillian is one of Canada’s leading experts in gender-based violence and frequently takes on cases involving sexual assault, abuse, h...

Jordan Diacur is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation. Jordan, who practices law in Hamilton, Ontario, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jordan is held by other top lawyers in the same geographic and legal practice area.

Todd Burke is a senior litigation partner in the firm's Ottawa office. His practice is focused on commercial litigation, professional liability and risk management. With over 20 years of experience, Todd has handled complex disputes for individuals, private and public companies, as well as government and other public agencies. His representation includes early case assessment, regular reporting, project management, e-discovery best practices, effective budgeting and vigorous representation. T...

Matt has a distinguished track record of success in complex, high-stakes disputes across multiple disciplines, including corporate and commercial litigation, insolvency litigation, fraud, and securities litigation. He has extensive experience in some of the most significant insolvency disputes in North America. Matt combines subject-matter expertise with creativity and ensures his litigation strategy aligns seamlessly with his clients’ long-term goals. Matt is highly regarded by clients...

Andrew J. F. Lenz is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law, Corporate and Commercial Litigation, Director and Officer Liability Practice and Legal Malpractice Law. Andrew J. F., who practices law in Ottawa, Ontario, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew J. F. is held by other top lawyers in the same geographic and legal practice area.

Rated by Martindale-Hubbell as AV-Preeminent (highest rating) in litigation, commercial law and regulatory law, named one of Canada’s top 50 trial lawyers by Benchmark Litigation, listed in The Best Lawyers in Canada and Chambers Canada, Andrew has extensive trial and appellate experience before all levels of court, including the Supreme Court of Canada. Andrew is regularly chosen by nationally-recognized corporations, institutions and individuals to assist in complex commercial, regula...

Michael B. McWilliams is a partner at Loopstra Nixon LLP and the head of the firm’s Commercial and Construction Litigation Group. He is a skilled and experienced advocate passionate about helping clients solve their litigation problems effectively and affordably. Michael works with lawyers and support professionals dedicated to providing outstanding representation and excellent client service. Michael practices in commercial and construction litigation and has appeared in all levels of ...

Hugh M. DesBrisay is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Product Liability Law. Hugh M., who practices law in Toronto, Ontario, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hugh M. is held by other top lawyers in the same geographic and legal practice area.

Sean M. Sullivan is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Insurance Law. Sean M., who practices law in Kitchener, Ontario, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sean M. is held by other top lawyers in the same geographic and legal practice area.

Kimberly (Kim) is a partner in Fasken’s Litigation and Dispute Resolution department and Co-Leader of the Firm’s ESG and Sustainability Practice Group. Her practice focuses on commercial litigation, including complex contractual disputes, professional negligence claims, and shareholder disputes. She regularly represents companies at the Ontario Superior Court of Justice’s Commercial List, a court specializing in commercial matters. Kim has expertise in administrative law mat...

Jeffrey Larry is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Securities Law. Jeffrey, who practices law in Toronto, Ontario, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey is held by other top lawyers in the same geographic and legal practice area.

Louis Frapporti is a partner in the the firm's Hamilton office. His practice covers a wide range of areas including product liability and insurance litigation, negligence and other tort actions, contractual disputes, and appellate advocacy. Following his call to the bar in 1992, he served a two-year appointment as a clerk to the Chief Justice of Ontario. In addition to his role as an advocate, Louis has occupied a number of management and administrative positions within the firm, including Ch...