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Ryan Alexander O'Neill
Law Offices of Mark Sherman, LLC • Stamford, CT
Contracts AgreementsEmployment LawPersonal Injury
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Contact
Email
Phone
(855) 981-1833
Address
29 Fifth Street, Stamford, CT, 06905, US
Professional
About
Meet Attorney Ryan Alexander O'Neill, a dedicated Partner at the Law Offices of Mark Sherman, LLC, based in Stamford, CT. With a robust background in criminal defense, civil litigation, employment law, and appeals, Ryan has been a pivotal force at the firm since 2008, leading complex and sensitive cases that require not only legal expertise but also strategic acumen. As the Chairman of the Trial, Major Felony & DWI Practice Groups, Ryan is passionate about courtroom advocacy. He regularly represents clients in Connecticut, New York, and federal trial courts, where his skillful litigation and persuasive legal motions have consistently yielded favorable outcomes. His experience extends to the appellate courts, where he has successfully argued cases before the Connecticut Supreme Court, the New York Appellate Division, and the United States Court of Appeals for the Second Circuit. Ryan's academic journey began at James Madison University, where he graduated in 2004. He later earned his Juris Doctor, graduating with honors from Quinnipiac University School of Law in 2008. A distinguished member of the Mock Trial Honor Society, Ryan played a key role in leading his team to victory at the 2008 National Trial Competition as the best individual advocate. His commitment to excellence in legal education was recognized with several honors, including the prestigious CLEA Outstanding Student Award for his exceptional clinical work. In addition to his legal practice, Ryan's passion for trial advocacy shines through his role as an adjunct professor at Quinnipiac University School of Law, where he teaches aspiring lawyers in the award-winning mock trial program. His dedication to mentorship and education reflects his belief in the importance of nurturing the next generation of legal professionals. Fluent in Spanish, Ryan effectively serves a diverse clientele, ensuring that Spanish-speaking clients receive comprehensive legal support. Whether navigating complex contracts or representing clients in high-stakes litigation, Ryan Alexander O'Neill is committed to delivering exceptional legal services with integrity and expertise.
About Contracts Agreements Law
Contract attorneys draft, review, and negotiate agreements to protect clients' interests. They help resolve disputes when contracts are breached. Common matters include contract drafting, contract review, negotiations, breach of contract.
Credentials
Education
2014 Temple University - James E. Beasley School of Law LL.M - Master of Laws 2008 Quinnipiac Univ. School of Law JD - Juris Doctor 2004 James Madison University BBA - Bachelor of Business Administration
Languages
Spanish | English
Recognition & Involvement
Awards
2016 Rising Star, Super Lawyers Magazine 2016 Associate Fellow, Litigation Counsel of America 2015 Rising Star, Super Lawyers Magazine 2014 Top 100 Trial Lawyers, The National Trial Lawyers 2013 Top Lawyer, Connecticut Magazine
Associations
2018 - Present National Association of Divorce Professionals 2016 - Present National Association of Criminal Defense Lawyers
Speaking
2016 DUIs in CONNECTICUT: RECENT UPDATES DUI in Connecticut 2016 Defending DUI Charges in Connecticut Defending DUI Charges 2016 2016 Connecticut Legal Conference Defending DUI Charges in Connecticut II
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Updated: Jun 09, 2026