About TWA Law

TWA Law is a Toronto litigation firm with an office at Bay and Bloor Streets. Managing partner Tom Arndt has more than 20 years of experience in class actions, complex commercial litigation, and general counsel work for corporate and individual clients, and has argued matters at every level of court in Ontario, as well as in national class actions. Arndt earned a B.Sc. (Hons.), cum laude, from the University of Guelph in 1992, went on to a J.D. from the University of Windsor Law School in 1998, and was called to the Bar of Ontario in 2000.

The firm is a member of Consulegis and Interleges, international networks of legal and consulting firms that connect it with counsel outside Canada. Its litigation work covers shareholder and business partner disputes, franchise litigation, construction claims, and professional negligence matters, in addition to the class actions that make up a significant part of the firm's docket, handled on both the plaintiff and defence side.

In the community

  • Tom Arndt has volunteered with Pro Bono Law Ontario, working on its Law Help pilot project and its Child Advocacy Project.
  • Arndt served as a past director of Willowdale Community Legal Services, a community legal aid clinic.
  • Arndt served as a past director of the Sir William Campbell Foundation, which preserves Campbell House, an 1822 heritage building that is now a museum in downtown Toronto.
  • Arndt has supervised and judged upper year moot competitions at the University of Toronto.
  • Arndt has served as duty counsel for Law Society of Ontario discipline tribunal hearings.

Good to know

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Who handles what

Where to find them

1203-1200 Bay Street, Toronto, Ontario, Canada M5R 2A5 · 416-488-2000

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This listing was generated by AI from public sources in August 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗

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