About
Stephen P. O’Malley Jr. is a founding attorney at McNulty & O’Malley, where he concentrates his practice on criminal defense and litigation. With decades of courtroom experience, he represents individuals facing criminal charges with a focus on early intervention, thorough preparation, and strategic advocacy at every stage of a case.
Stephen earned his Bachelor of Science and Bachelor of Arts from Boston University School of Management in 1988, graduating on the Dean’s List. He later earned his Juris Doctor, cum laude, from Suffolk University Law School in 1995, where he was selected as the commencement speaker.
Before entering private practice, Stephen served as an Assistant District Attorney in Essex County and worked in the Economic Crimes Division of the Office of the United States Attorney. This prosecutorial background provides him with valuable insight into charging decisions, negotiation strategy, and case evaluation from both sides of the courtroom.
Stephen’s criminal defense practice emphasizes domestic violence cases, 209A restraining orders, drug and marijuana charges, and Operating Under the Influence matters. He is known for strong negotiation skills and experience in alternative dispute resolution, often helping clients achieve favorable outcomes while minimizing the long-term impact of criminal charges.
Stephen is admitted to practice in the Massachusetts District and Superior Courts and the United States District Court for the District of Massachusetts. He has also served as a panel member for Suffolk University Law School, reflecting his ongoing involvement in legal education and the profession.
Stephen P. O’Malley Jr. is an active member of the Lynn Bar Association and the Massachusetts Association of Criminal Defense Lawyers. Clients value his personal attention, persistence, and clear communication, which have earned him a reputation for dependable representation and consistent results across Massachusetts.
Law Office Affiliations
- Partner, McNulty & O’Malley
- Member, Lynn Bar Association
- Member, Massachusetts Association of Criminal Defense Lawyers
Licensed State
- Massachusetts
Education
- Suffolk University Law School
Juris Doctor (JD) - Boston University School Of Management
Bachelor of Arts (BA)
Awards & Badges

- Drug Crime
- Expungement
- Restraining Orders
- Sex Crime
- Violent Crime
- Appeals
- Domestic Violence
- Gun Law




