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Mark Halfyard

Mark C. Halfyard is a criminal appellate lawyer and partner at Rusonik, O’Connor, Robbins, Ross, Gorham & Angelini LLP—Canada’s largest law firm dedicated solely to criminal law. He is one of Canada’s most prolific appellate lawyers, having argued over 165 appeals at the Court of Appeal for Ontario. He also appears regularly in the Federal courts and at the Supreme Court of Canada.

Mark is the co-author of Criminal Appeals: A Practitioner’s Handbook (Emond Publishing, 2017: ISBN: 978-1-77255-138-9). He has published various articles on criminal law and appellate issues and is regularly consulted by media outlets for his expertise in these areas. Mark is a member of the Criminal Lawyer’s Association’s (CLA) Intervention Committee, which oversees criminal and quasi-criminal interventions in the case at the Supreme Court of Canada. He sits on the Board of Directors—and is a member—of the Pro Bono Inmate Appeal Program, which assists unrepresented appellants before the Court of Appeal for Ontario. He also acts as a criminal review counsel for Innocence Canada.

Mark has taught at various institutions, including the University of Ontario Institute of Technology (UOIT), as an adjunct professor in the criminology department focusing on organized crime. Mark regularly contributes to continuing education panels and criminal law conferences throughout Ontario.