About Mari

Mari Galloway is an associate at Lenczner Slaght, where her litigation work spans commercial, construction, estates, insurance and public law disputes. She has appeared as counsel at every level of court in Ontario and regularly argues before administrative tribunals and boards. As the 2020-2021 Harold G. Fox Scholar, she spent a term working in chambers with barristers at Middle Temple in London on international and public law matters. Mari earned her JD from the University of Ottawa in 2019, graduating magna cum laude, and was called to the Ontario bar in 2020. Before law school, she completed a joint master's degree in environmental policy and planning in Berlin and a bachelor's degree in political science from McGill University.

Practice areas

Civil Litigation & Dispute Resolution Class Actions Construction Law Insurance Law Administrative & Regulatory Law

Education & credentials

Law school
University of Ottawa
Undergraduate
McGill University (BA, Political Science and Environmental Studies)
Other degrees
Freie Universität Berlin, Master of Arts (Environmental Policy and Planning)

Listing compiled from public sources in August 2026. Confirm Mari Galloway’s licence and standing in the Law Society of Ontario directory ↗