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

1,056 Profile Views

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Gerardo Kris

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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Jacquelyn Haag

Jan 31, 2026

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

If you're looking for someone who actually cares and will fight for you, go to Mary L. O'Connor. They helped me out big time with my Commercial Litigation law issue and kept me informed at every step...

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Dan Jones

Jan 31, 2026

A huge weight off my shoulders thanks to the amazing work of Mary L. O'Connor

Mary L. O'Connor has been doing this since Recognized in Best Lawyers since 2019, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my legal...

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Kristine Collins

Jan 31, 2026

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

It's hard finding a reliable lawyer these days, but Mary L. O'Connor in Dallas is definitely one of the good ones. Would use them again if needed without hesitation. They are professional, responsive,...

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Jodi Kerluke

Jan 31, 2026

Mary L. O'Connor did a great job handling my complex Commercial Litigation law case from start to finish

Needed help with Commercial Litigation law and Mary L. O'Connor delivered on their promises. They're professional, efficient, and easy to talk to. Good choice for anyone in Texas looking for high-qual...