Linda J. Visser is a partner of Siskinds LLP. Siskinds has offices in London (Ontario), Toronto, Vancouver and Quebec City.

Linda has a diverse class actions practice. She prosecutes complex price-fixing, product liability, consumer protection and institutional abuse class actions.

Linda has been counsel in many important price-fixing cases, including the Supreme Court of Canada decision in Pioneer Corp. v Godfrey, 2019 SCC 42, which dealt with important issues relating to who can assert a claim based on price-fixing and what claims can be brought. Linda was also counsel in hydrogen peroxide – the first case to be certified on behalf of a class that includes indirect purchasers. Linda has argued at all levels of court, including before the Supreme Court of Canada. In recent years, she was before the Ontario Court of Appeal or Supreme Court of Canada on important legal issues, including the court’s jurisdiction of foreign class members, whether umbrella purchasers (purchasers of the relevant product from non-defendant manufacturers) have a cause of action in a price-fixing claim, and whether the statutory claim contained in the Competition Act provides for discoverability.

Linda served two terms on the Siskinds Board of Directors, shaping the future direction of the firm and making important decisions on investment in technology and IDEA (inclusion, diversity, equity and accessibility).

Linda served as a member of the Ontario Class Action Bench-Bar Liaison Committee between 2019 and 2023, and recently chaired the multi-jurisdictional subcommittee and the nominations subcommittee. In 2023, she chaired the Committee.

Linda has been recognized for her expertise in class actions. Among other recognitions, for the last several years, including most recently for 2026, Linda has been a ranked lawyer in the nationwide plaintiff class action lawyers rankings by Chamber & Partners.