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

1,029 Profile Views

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Kristen Pfannerstill

Feb 04, 2026

Reliable lawyer you can count on - Antoine Guilmain provided excellent service throughout

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...

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Percy Zulauf

Feb 04, 2026

Solid work and professional service from Antoine Guilmain in Montréal for Quebec residents

It's hard finding a reliable lawyer these days, but Antoine Guilmain in Montréal is definitely one of the good ones. Would use them again if needed without hesitation. They are professional, responsiv...

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Lester Nienow

Feb 04, 2026

Professional service and clear communication provided by Antoine Guilmain in Montréal

Solid experience overall with the law firm of Antoine Guilmain. They know Privacy and Data Security Law inside and out and gave me great advice. Very helpful and got the job done exactly as they said...

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Sheryl Lind

Feb 04, 2026

A huge weight off my shoulders thanks to the amazing work of Antoine Guilmain

Everyone at Antoine Guilmain's office in Montréal was so nice and helpful. They made a tough situation a lot easier to deal with by being so patient and explaining everything clearly. I never felt lik...

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Dwight Will

Feb 04, 2026

Many thanks to Antoine Guilmain for the hard work and dedication to my legal matter

Really glad I found Antoine Guilmain for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in...