Justia Lawyer Rating
Super Lawyer
CT Magazine
Under 40 Trial Lawyers
Avvo 10.0
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Ryan A. O’Neill

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Phone: (203) 569-3599
Fax: (203) 325-9478

19 Halls Rd #227
Old Lyme, Connecticut 06371

Since joining the firm in 2008, Attorney O’Neill has taken the lead on some of the Firm’s most complex and sensitive cases in all areas of the Firm’s legal practice, including criminal defense, civil litigation, employment law and appeals.

He works as an adjunct professor at Quinnipiac University School of Law, where he serves as trial instructor for Quinnipiac’s award-winning mock trial program.

Ryan has been recognized as a Top Attorney in Connecticut by Connecticut Magazine in 2013 and one of Connecticut’s Top 100 Trial Lawyers by the National Trial Lawyers in 2014.


LL.M., Temple University School of Law, 2014
Trial Advocacy

J.D., Quinnipiac University School of Law, 2008
Graduated with honors. President of the Mock Trial Society, 2008 regional championship team for the National Trial Competition where he was awarded best individual advocate. At Quinnipiac Law, Ryan earned a number of academic awards.

James Madison University, 2004

Jurisdictions Admitted to Practice Connecticut, 2008
New York, 2009
U.S. Second Circuit Court of Appeals
U.S. District Court, District of Connecticut
U.S. District Court, District of Connecticut Bankruptcy Court
Professional & Bar Association Memberships

Fairfield County Bar Association

Client Reviews
I found Mark Sherman after doing an extensive search for DCF attorneys on the internet. He is without a doubt the most honest and straightforward attorney I have ever met. Rather than trying to push us towards an expensive engagement he quickly addressed our issue with a recommended course of action. My wife and I left his office feeling much better and confident in our situation. His fee was well worth the investment and I highly recommend his services. Robert E.