John Carlo Mastrangelo
Automatically compiled listing. Details may contain errors.- Called to the bar
- 2018
About John
John Carlo Mastrangelo maintains a broad litigation practice centred on corporate commercial litigation and public law, with subject-matter experience in telecommunications, energy, and real estate. He has played key roles in significant matters including a precedent-setting CRTC appeal, a historic First Nations treaty claim, and the largest contested merger in Canadian history, appearing at all levels of court in Ontario as well as before the Competition Tribunal and the Supreme Court of Canada. He graduated as gold medallist from Osgoode Hall Law School in 2017, winning several subject-matter prizes, and clerked for Justice Suzanne Côté at the Supreme Court of Canada before being called to the Ontario Bar in 2018. He completed his undergraduate studies at Glendon College, York University.
Education & credentials
- Law school
- Osgoode Hall Law School
Is this you?
Fix or remove this listing, or add a free listing badge
Something wrong with this listing? Tell us and we’ll hide it right away while we review your request, then correct it or take it down.
Add your free listing badge
Add the free LawOnline listing badge to your website. It tells visitors you’re listed in an independent Canadian lawyer directory and links back to this profile. Being listed isn’t a certification or an endorsement, and the badge doesn’t mean we’ve checked your credentials.
This listing was generated by AI from public sources in August 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on their firm’s website. Confirm John Carlo Mastrangelo’s licence and standing in the Law Society of Ontario directory ↗
How this data is compiled and checked · Correct or remove this listing