Mary L. O'Connor

Mary L. O'Connor

Commercial Litigation Litigation - Regulatory Enforcement (SEC, Telecom, Energy) Litigation - Securities
Recognized in Best Attorney USA since 2019

About Mary

Mary L. O’Connor’s practice focuses on representing public companies and their officers and directors in commercial litigation and arbitration, securities litigation, internal investigations, and regulatory investigations and enforcement proceedings.Ms. O’Connor is a member of the Commercial Panel of the American Arbitration Association and is a FINRA arbitrator.

Mary L. O’Connor’s practice focuses on representing public companies and their officers and directors in commercial litigation and arbitration, securities litigation, internal investigations, and regulatory investigations and enforcement proceedings.Ms. O’Connor is a member of the Commercial Panel of the American Arbitration Association and is a FINRA arbitrator.

Mary L. O’Connor’s practice focuses on representing public companies and their officers and directors in commercial litigation and arbitration, securities litigation, internal investigations, and regulatory investigations and enforcement proceedings.

Ms. O’Connor is a member of the Commercial Panel of the American Arbitration Association and is a FINRA arbitrator.

Professional Affiliations

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Reviews

4.6 / 5

38 Reviews

1,059 Profile Views

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Homer Littel-Wyman

Jan 31, 2026

Reliable lawyer you can count on - Mary L. O'Connor provided excellent service throughout

Solid experience overall with the law firm of Mary L. O'Connor. They know Commercial Litigation law inside and out and gave me great advice. Very helpful and got the job done exactly as they said they...

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Ernesto Fadel-Cremin

Jan 31, 2026

Simply amazing representation from Mary L. O'Connor's office during my recent legal matter

Short and sweet: Mary L. O'Connor is the real deal and a true professional in the field of Commercial Litigation law. If you're in Dallas and need help with your legal issues, call them immediately. Y...

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Zachary Powlowski

Jan 31, 2026

Excellent legal representation provided by Mary L. O'Connor for my Commercial Litigation law case

Really glad I found Mary L. O'Connor 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...

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Lorenzo Altenwerth

Jan 31, 2026

Five stars for the incredible team at Mary L. O'Connor in Dallas - they are amazing

Mary L. O'Connor is fantastic and very professional. Don't hesitate to hire them if you're in Texas and need help. They really know their stuff and will go the extra mile to make sure you're taken car...

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Sabrina Friesen

Jan 31, 2026

Five stars for the incredible team at Mary L. O'Connor in Dallas - they are amazing

Mary L. O'Connor is fantastic and very professional. Don't hesitate to hire them if you're in Texas and need help. They really know their stuff and will go the extra mile to make sure you're taken car...