Justia Lawyer Rating
Massachusetts Bar Association
Super Lawyers
AVVO Rating
National College

Criminal Defense

The Law Office of Ryan P. Sullivan handles only criminal defense cases, specializing in this area of practice to stay focused and committed to a vigorous defense. If you or a family member has been charged with or accused of a crime, we can help. Mr. Sullivan is a former prosecutor with over ten years experience handling many different types of cases. Mr. Sullivan is always up-to-date on the new changes in criminal law and the many ways that Massachusetts prosecutors are trying to win their cases. Someone who knows the tools police use – and can defend against them – is the right person to handle your case.

Ryan Sullivan grew up in the greater Lowell area and uses his connections and relationships to explore creative ways to get results for you. As a well-known Lowell criminal defense attorney, Mr. Sullivan uses his knowledge of the courthouses in Lowell, Lawrence, Concord, Ayer and the surrounding communities to help you through the court process from arraignment to trial and beyond. Whether it is battling with prosecutors in the courtroom or negotiating with the police to prevent charges from ever issuing, Mr. Sullivan is able to help you with your case from the moment you are accused and every step afterwards.

Our philosophy is to create a custom defense suited to your specific needs. We will discuss during our free consultation what you are (or could be) charged with, an assessment of likely defense strategies, and a timeline for how the case will develop. We are focused on getting you the best possible result in the shortest amount of time. Mr. Sullivan’s experience and strategy has led to many cases being dismissed, findings of not guilty, and other favorable results.

An Experienced Massachusetts Criminal Defense Attorney on Your Side

Before founding the Law Office of Ryan P. Sullivan, Attorney Sullivan worked for the Middlesex District Attorney’s Office in the Malden, Woburn, Marlborough, and Lowell Superior Courts. Attorney Sullivan had a reputation of being a talented prosecutor and forged relationships with law enforcement while leading several criminal investigations. Since 2014, Attorney Sullivan has been using the tools he learned to provide successful and customized defenses for all of his client’s needs.

Representing clients during investigations, before the grand jury, at arraignment, through trial, and on appeal, Ryan Sullivan can handle any case during all stages. Mr. Sullivan only handles criminal defense cases, focusing his entire practice and time to the defense of people charged with crimes.

Attorney Sullivan has represented hundreds of people who have been accused of crimes in Massachusetts. He has achieved not guilty verdicts at trial, argued for cases to be dismissed successfully, convinced judges to suppress evidence against his clients, and prevented clients from being charged in the first place. You need someone who is not afraid to go to trial, can think strategically, and who will listen to your case and care about the result. Attorney Sullivan is committed to achieving you the best results, in the shortest amount of time.

An Attorney Who is not Afraid to Fight for You

There are far too many cases that end up pleading because of a desire not to fight the case all the way to the end. Mr. Sullivan is not afraid to go to trial. He understands that going to trial – having a case decided by a judge or a jury – can be a daunting task. With that in mind, Mr. Sullivan often advises his clients to at least pursue that as a possibility. Mr. Sullivan has handled numerous cases that have been dismissed on the day of trial as a result of his arguments, advocacy, and reputation with the prosecutors.

Every case is different and every client has a different set of goals for their cases. Attorney Sullivan looks at every case with a fresh perspective and works with his clients to devise a strategy that works. Attorney Sullivan handles all types of criminal cases in any court in Massachusetts. He focuses his practice primarily in the communities surrounding Lowell, and is sought after often to handle very serious crimes, including:

  • Domestic Assault and Battery
  • Operating Under the Influence of Alcohol (OUI/DUI)
  • Operating Under the Influence of Drugs
  • Drug Crimes
  • Guns & Weapons
  • Theft / Robbery
  • Restraining Orders

Attorney Sullivan handles numerous other offenses as well, including representation for a clerk’s hearing or probation violations. The best piece of advice any attorney can give you is to consult an attorney early. Whether you committed the crime or are wrongfully accused, you can still be charged! Many people do not realize that being innocent is not a guarantee that you will not be charged with a crime. Talking to a skilled attorney with a past history of achieving excellent results can make all the difference.

Call an Experienced Lowell Criminal Defense Lawyer

Call or e-mail Lowell criminal defense Attorney Ryan Sullivan today to discuss your case and what can be done to help you during this difficult time.

Client Reviews

Great lawyer he has helped my family immensely. Very capable and dedicated. A lawyer who actually cares and an all around good person.


Ryan Sullivan is a very knowledgeable attorney. He is one of my go-to professionals when I am seeking insight on more complicated criminal matters. Without any reservations, he has my vote of confidence.

Ilya Liviz

Attorney Ryan Sullivan is professional, knowledgeable and compassionate.

Millie Cardello

My mom was involved in a horrible accident and we eventually found out she needed a lawyer. We had no idea who to contact and a mutual acquaintance recommended Attorney Ryan Sullivan. After our first meeting with Ryan we knew he was the attorney for our case. His communication and knowledge...

Heather R.

Contact Us

  1. 1 Free Consultation
  2. 2 Schedule a Confidential Evaluation
  3. 3 We Will Fight for You
Fill out the contact form or call us at (617) 997-7597 to schedule your free consultation.

Leave Us a Message

I have read the disclaimer

We Accept the Following Payment Solutions