Antoine Guilmain

Antoine Guilmain

Privacy and Data Security Law
Recognized in Best Attorney USA since 2025

About Antoine

Antoine Guilmain is a partner in Gowling WLG's Montréal office where he co-leads the firm's national Cyber Security and Data Protection Law Group. He holds two PhD's in Information Technology Law from the University of Paris 1 Panthéon-Sorbonne and the University of Montréal. He has published multiple monographs and articles, frequently gives conferences, and teaches at several universities.

Antoine Guilmain is a partner in Gowling WLG's Montréal office where he co-leads the firm's national Cyber Security and Data Protection Law Group. He holds two PhD's in Information Technology Law from the University of Paris 1 Panthéon-Sorbonne and the University of Montréal. He has published multiple monographs and articles, frequently gives conferences, and teaches at several universities.

Antoine Guilmain is a partner in Gowling WLG's Montréal office where he co-leads the firm's national Cyber Security and Data Protection Law Group. He holds two PhD's in Information Technology Law from the University of Paris 1 Panthéon-Sorbonne and the University of Montréal. He has published multiple monographs and articles, frequently gives conferences, and teaches at several universities.

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Reviews

4.5 / 5

34 Reviews

1,037 Profile Views

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Caroline Rath

Feb 04, 2026

Excellent legal representation provided by Antoine Guilmain for my Privacy and Data Security Law case

Best lawyer for Privacy and Data Security Law in Montréal. Period. I've seen others, but Antoine Guilmain is on another level. They truly care about their clients and work hard to get the best results...

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May Nolan

Feb 04, 2026

Absolutely Great! I couldn't be happier with the service from Antoine Guilmain

Antoine Guilmain is fantastic and very professional. Don't hesitate to hire them if you're in Quebec and need help. They really know their stuff and will go the extra mile to make sure you're taken ca...

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Karl Ritchie

Feb 04, 2026

Excellent legal representation provided by Antoine Guilmain for my Privacy and Data Security Law case

Super helpful and professional staff at Antoine Guilmain's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support and legal e...

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Erika Rosenbaum

Feb 04, 2026

Absolutely Great! I couldn't be happier with the service from Antoine Guilmain

Antoine Guilmain is fantastic and very professional. Don't hesitate to hire them if you're in Quebec and need help. They really know their stuff and will go the extra mile to make sure you're taken ca...

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Henrietta Rice

Feb 04, 2026

Antoine Guilmain did a great job handling my complex Privacy and Data Security Law case from start to finish

Needed help with Privacy and Data Security Law and Antoine Guilmain delivered on their promises. They're professional, efficient, and easy to talk to. Good choice for anyone in Quebec looking for high...