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About Us

About Ryan P. Sullivan: Experienced Criminal Attorney

Every individual charged with a crime has the right to an attorney, and the lawyer you choose will make a significant difference in the outcome of your case. The knowledge and experience of your lawyer — as well as the energy he or she puts into your case — are all critical components of a successful defense.

Choose the Law Office of Ryan P. Sullivan for Your Defense

When you are facing criminal charges in Massachusetts, choose the Law Office of Ryan P. Sullivan in Lowell. Attorney Ryan P. Sullivan worked for years as an award-winning prosecutor in the Middlesex County District and Superior Courts.

Drawing upon his extensive knowledge of how prosecutors build cases, he is dedicated to finding flaws and weaknesses in their investigation tactics as a full-time criminal defense lawyer. From drunk driving charges and drug crimes to weapons offenses, sex crimes and theft charges, you can count on Ryan P. Sullivan to vigorously defend your rights and your freedom.

“I am so grateful to have been referred to Ryan. He is incredibly knowledgeable, compassionate and responsive.”

— Client testimony

Ryan P. Sullivan is an aggressive OUI, drug crime and violent crimes defense attorney, and has earned a lasting reputation as a highly talented trial lawyer. He is a member of the National Drunk Driving College Defense, and was selected for inclusion among the Super Lawyers Rising Stars in Massachusetts in 2014, 2015, 2016, and 2017. He was also named to the Top 100 Trial Lawyers in Massachusetts in 2014 by the National Trial Lawyers organization.

Aggressive. Dedicated. Effective

The Law Office of Ryan P. Sullivan is dedicated to providing you with high-quality criminal defense representation. At the first sign of legal trouble, call (617) 997-7597 or contact the firm online for immediate assistance.

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.

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  3. 3 We Will Fight for You
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