About Guy

Guy Mattar is an associate at Gibson Tanner Rabin LLP with more than 50 years' experience advising clients on wills, estate administration, real estate conveyancing, and business law. He's a graduate of the University of Ottawa's law school and was called to the bar in 1972. He has a particular interest in charitable causes and has assisted several organizations with their charitable work, and his training as a mediator supports his client relationships. He's fluent in English and French, with a working knowledge of Spanish that helps him serve Ottawa's Latino community.

Practice areas

Wills, Estates & Trusts Real Estate Law Business & Corporate Law

Education & credentials

Law school
University of Ottawa

Listing compiled from public sources in July 2026. Confirm Guy Mattar’s licence and standing in the Law Society of Ontario directory ↗