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

1,033 Profile Views

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Clifford Bashirian

Feb 04, 2026

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

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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Melanie Stracke

Feb 04, 2026

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

I've worked with a few lawyers in Montréal over the years, but Antoine Guilmain stands out for their honesty and thoroughness. They were clear about the process and kept me updated at all times. I fel...

L

Leroy Gerhold

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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Faith Mraz

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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Bridget Fadel

Feb 04, 2026

A very good experience overall with the entire team at Antoine Guilmain's legal practice

I've worked with a few lawyers in Montréal over the years, but Antoine Guilmain stands out for their honesty and thoroughness. They were clear about the process and kept me updated at all times. I fel...