Mackenzie Hayden


 | Vancouver

Mac Hayden is an associate in the Aboriginal Law Group at Cassels. Mac maintains a broad Aboriginal law practice, advising clients on matters pertaining to Indigenous-Crown relations and Indigenous rights. Mac brings unique insight to his clients’ challenges, having served as an advisor to both the Ontario government and the government of Canada, including as a Press Secretary and Policy Advisor to the federal Minister of Natural Resources.

Mac received his J.D. degree from the University of Ottawa. While in law school, Mac was named to the Dean’s Honor List, achieved the faculty’s highest standing in Property Law, and served as an Associate Editor of the Ottawa Law Review. Mac also contributed to three interventions before the Supreme Court of Canada related to the constitutionality of the federal carbon pricing system.

Prior to joining Cassels, Mac articled in the Vancouver office of a global law firm.

  • J.D., University of Ottawa, 2021
  • British Columbia, 2022
  • Canadian Bar Association
  • Law Society of British Columbia