Harrison Pensa LLP

David Williams

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Practice Areas

Dave Williams specializes in class action litigation, complex commercial litigation, personal injury and medical malpractice.


As a veteran litigator, Dave’s 37-year legal career has brought him before the Trial Division, the Court of Appeal and the Supreme Court of Canada. He has been involved in many high profile cases including being a member of the plaintiffs’ class action group for the Walkerton contaminated water claim as well as a landmark aboriginal rights dispute. In 2013, Dave was chosen among Canada’s top lawyers in Corporate and Commercial Litigation, Insurance Law and Personal Injury Litigation. Moreover, Mr. Williams was named Best Lawyers’ 2014 “Lawyer Of The Year” in Corporate and Commercial Litigation London/Windsor. Dave was also the Managing Partner at Harrison Pensa from 1999 until he stepped down in 2014.

Professional Memberships

Member of the Canadian Bar Association, Advocates' Society, and the American Association for Justice. Dave is also a fellow of the American College of Trial Lawyers (since 2009).


He has taught courses on civil litigation, advocacy and practice for the Bar Admission Course and has also published numerous conference papers in his areas of practice.