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John Rosen
Senior Partner

Direct: (416) 507-2440
Email: johnrosen@rosenlaw.ca

John M. Rosen has practised Criminal Law for over 49 years, representing a wide variety of clients, both individuals, and corporations, in serious and complex criminal, quasi-criminal and professional discipline cases.  He has appeared before all levels of court in Ontario and the Supreme Court of Canada.  He has also appeared as counsel before the British Columbia Supreme Court and Court of Appeal, the Nova Scotia Court of Appeal, the United States Federal Court (in New York City, Buffalo, N.Y. and Harrisburg, Pa.) and the Grand Court of the Cayman Islands.

John is a recipient of the Law Society Medal (2010), the Osgoode Hall Law School Alumni Gold Key Award for Achievement (2017) and the G. Arthur Martin Criminal Justice Medal awarded by the Criminal Lawyers Association (2018).

John is a long-standing member of the Criminal Lawyers Association, where for many years he served as its Treasurer and later as a Vice-President, and the Advocates’ Society, where he has served twice as a Director.  He also has a long affiliation with the National Association of Criminal Defense Lawyers (U.S.), and the Canadian and American Bar Associations.

Throughout his career, John has been actively involved in Continuing Legal Education and has appeared as a guest lecturer, presenter, speaker and panellist for numerous legal and non-legal organizations, associations and law schools in Canada and the United States.  He currently leads a free private seminar on cross-examination for young lawyers and provides mentorship to young trial and appellate lawyers practising in the Greater Toronto Area.

John M. Rosen received an LL.B. from Osgoode Hall Law School in 1968 and was called to the Bar of Ontario in 1970.

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