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Peter MacKay, PC, QC

About Peter

Peter is Counsel at McInnes Cooper. Leveraging his public service and legal experience, Peter collaborates with McInnes Cooper professionals to bring strategic value to business and public sector leaders within and outside of Atlantic Canada.

Peter served in the Parliament of Canada for over 18 years as a cabinet minister in high-profile portfolios, including Justice and Attorney General, Department of National Defense, Foreign Affairs and the Atlantic Canada Opportunities Agency. He chaired the Government National security committee for almost 10 years. Peter started his legal career in Nova Scotia as a Crown Prosecutor and worked as a general practitioner before entering politics.

A proud Canadian, Peter has supported local and national causes on many levels. He is co-chair of Boost-Child Youth Advocacy Centre and serves on the boards of Special Olympics Canada and Wounded Warriors Canada. He volunteers his time with Children’s Aid Society, Covenant House, Big Brothers Big Sisters, Acadia and Dalhousie Universities, and the Canada-United States Law Institute.


  • LL.B., Dalhousie University (1990)
  • B.A., Acadia University (1987)

Bar Admissions

  • Nova Scotia (1991)
  • Ontario (2016)


  • English
  • French