André MarinCounsel to the Firm

André joined Lister Beaupré as Counsel to the Firm on November 1, 2019.

André started his career as an assistant Crown Attorney in 1991. He prosecuted high-profile cases of sexual assault and malfeasance by public officials, among others, and still practices in criminal law.

Between 1996 and 1998, André was the Director of the Special Investigations Unit where he investigated police officers when their involvement caused serious injuries or death.

Prior to becoming Ontario’s Ombudsman, André was the Canadian Armed Forces and National Defense Ombudsman from 1998 to 2005, where he dealt with complaints from rank and file members against the chain of command, including cases of harassment, abuse of authority and post-traumatic stress disorder.

From 2005 to 2015 André was the Ombudsman of Ontario, an officer of the provincial legislature. He is the only Ombudsman since the creation of the office to be renewed. He was appointed then renewed by unanimous vote of the Assembly. During his ten year as Ombudsman, he led an office of over 100 employees overseeing more than 600 provincial agency, boards, commissions and line ministries. His recommendations to improve governance were accepted and implemented in virtually all cases.

From 2015 to October 31, 2019, he worked as a solo practitioner at Andre Marin Law where he focused primarily on administrative law and working as workplace investigator. During that same period, he also taught criminal law as a part-time professor at the University of Ottawa. André is also an anti-corruption expert who has worked in Kiev on behalf of the OECD and in the extractive mining industry in Cameroon, Burkina-Faso, Madagascar and Mali. He continues writing as a national columnist for Postmedia every Sunday.

In recognition of his work as Ombusman and lawyer, André has received many accolades from the legal community: Top 25 Most Influential Lawyers – Canadian Lawyer magazine, 2014 and 2013, Top 25 people in the Capital – Ottawa Life magazine, 2014, 50 Most Influential Torontonians – Toronto Life magazine, 2013, John Tait Award of Excellence, Canadian Bar Association, 2012 national award presented annually to a public sector lawyer who has made significant contributions to social justice and who exemplifies pre-eminent public service, Distinguished Service Award, Ontario Bar Association, 2012, recognizes exceptional career contributions and/or achievements to the legal profession, including contributions to a significant law-related benefit to the residents of Ontario. In addition, André is the recipient of the Achievement in Oversight Award, National Association for Civilian Oversight of Law Enforcement (U.S.), 2012, recognizes significant accomplishment and contribution to civilian oversight of police. This marked the first time the award was given to non-U.S. citizen. Finally, André received the Tom Marshall Award of Excellence, Ontario Bar Association, 2009, provincial award presented annually to a public sector lawyer for contributions in public policy and legislation, service to the public and exemplary achievement in social justice.

André has taught as part-time professor of law in both the common law and civil law faculties on and off since 1993 in French and in English. Courses have included trial tactics and advocacy, criminal law, criminal procedure, advance criminal law and legal writing. He is the author of The Guide to Investigations and Prosecutions, 1995, Canada Law Book. André has been recognized by both of his alma maters, receiving the A.D. Dunton Award of Distinction (2010) bestowed by Carleton University for outstanding achievement by an alumnus, the highest such award given by the University.

André was also inducted in the Common Law Honour Society (2012) for significant contribution to legal community and success in law and the civil law faculty’s Ordre du Mérite [Order of Merit] (2011) for leadership in law on a national level.

André is a graduate of the University of Ottawa’s National Law Program (LL.L.-JD) magna cum laude with first class honours. He received the Justice Brian Dickson Prize for the highest standing of his class in the last year. He also was awarded the John Aylen, Q.C. Prize for holding the highest standing over the LL.L.-JD program.

When André can’t be found at the office, you can likely find him at the local gym on the stair climber or pumping weights.

Call to the Bar
Ontario, 1991

B.A., Carleton University, 1985
LL.L.-JD, magna cum laude with first class honours, University of Ottawa, 1989

You can contact André at or 613-234-2500.