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Peter ​N. ​Mantas

Peter ​Mantas
In an increasingly complex business world, the risk of running afoul of the law, both at home and abroad, cannot be underestimated.
Title Partner, Co-Leader of White Collar Defense & Investigations Group
Fasken Martineau
Languages Spoken English


Peter ​Mantas


An experienced litigation lawyer, and member of the Bars of Ontario and New York, Peter Mantas has acted in some of the most prominent cases in the country.

Peter has particular expertise in proceedings involving government, public procurement, anti-corruption, fraud, defamation, class actions, anti-trust and international investigations and proceedings. Frequently retained to represent high-profile clients, he is valued for his understanding of reputational risk, media relations and crisis management. Peter has experience in both criminal and civil cases, and has acted as counsel before numerous judicial bodies including the Supreme Court of Canada, the Canadian International Trade Tribunal, and international and domestic arbitration panels.

Co-leader of Fasken Martineau’s white collar defense and investigations group and an editor of the blog, White Collar Post, Peter is known for his careful preparation, strategic advice and tough but reasonable approach, Peter has been recognized for his expertise by Chambers CanadaBenchmark Litigation, Legal 500 Canada and Canadian Lawyer.