Welcome to the official website of Carissima Mathen – legal expert.

Carissima Mathen is a law professor at the University of Ottawa.  She is an expert in the Constitution of Canada, criminal law and U.S. Constitutional Law.  She has a special interest in the Supreme Court of Canada, judicial review, the separation of powers, criminal justice, and the relationship between law and social media.   She publishes and lectures frequently in these areas.

She is committed to making complex legal issues understandable to broad audiences, explaining the law in accessible and interesting ways.   She is regularly sought-out as a media commentator on legal issues, appearing on national and international television, radio and in print.  A frequent blogger and tweeter, she pioneered the practice of live-tweeting from the Supreme Court of Canada.