


Charged with a crime in Rockingham County? We don’t flinch — we fight. At The Law Office of Matthew W. Peterson, our aggressive criminal defense team takes on the toughest cases across New Hampshire, from Brentwood and Candia to Derry, Hampton, Portsmouth, and Salem. We know the courts. We know the stakes. And we don’t stop until we win. Your freedom isn’t negotiable — it’s our mission. Let’s take the fight to them.

We’ve helped many clients achieve dismissals, acquittals, and reduced charges — and we’re committed to continuing that success.
We’re fully prepared to go to trial, and we don’t shy away from it. Prosecutors understand that we’re serious the moment we step into the courtroom.
Every case is deeply personal to us. We advocate with the urgency and commitment your situation deserves—because for many, the outcome truly matters.
You’re more than just a case number to us. We take the time to listen, develop a thoughtful strategy, and support you every step of the way.
EXCELLENT Based on 168 reviews Posted on Ricardo SilvaTrustindex verifies that the original source of the review is Google. They helped me with my Marriage based green card process. Everything was simple and every time I had any questions or concerns, I could quickly schedule a call with Mr. Peterson! Thank you for your help and I totally recommend it. We had to submit the paperwork 3 times, but upon final submission, it took 4 months to get my case approved!Posted on Tyler HunterTrustindex verifies that the original source of the review is Google. Amazing experience having the law office of Matthew W Peterson take my case. Chris did such an outstanding job, with such professionalism I can’t thank him enough! And the entire staff made everything such a breeze to work with them. Especially for someone out of state!Posted on Douglas ATrustindex verifies that the original source of the review is Google. Im so thankful with attorney Matthew Peterson I Was going through problems that could’ve got me jail time but thanks to his Intelligence and strategics he got my case dismissed. I would 100% recommend him if you ever need an attorney to represent in court and help you with criminal chargesPosted on Alisha UnderwoodTrustindex verifies that the original source of the review is Google. If you find yourself needing legal help in the Boston area, give this firm & Attorney Manchinton a call. The entire firm was very supportive and responsive throughout my entire case. I could tell Attorney Manchinton genuinely cared and felt a sense of indignation about what I was going through. We were able to get the best possible outcome - a dismissal at the clerk magistrate level which was such a relief. Don’t hesitate, don’t call someone else, hire the Law Office of Matthew W. Peterson.Posted on MikeTrustindex verifies that the original source of the review is Google. Matt and team were very professional and helped me understand everything. Highly recommend!Posted on Michele “Michelec”Trustindex verifies that the original source of the review is Google. Amazing lawyer!!! Prepared, available, and effectivePosted on fred jonesTrustindex verifies that the original source of the review is Google. Matthew Peterson was unbelievably helpful during my process of clearing up a cpl diffrent issues with my LTC. I would recommend him 10/10 times to anyone who is in need of his help.Posted on Kenyon GramajoTrustindex verifies that the original source of the review is Google. We are truly grateful for the help, support, and guidance we received from Mr. Peterson and his team. From beginning to end, they handled our case with professionalism, care, and expertise. Mr. Peterson made sure we understood each step of the process and always took the time to answer our questions. His guidance gave us confidence and peace of mind, and everything was handled smoothly and efficiently. We highly recommend Mr. Peterson and his team to anyone in need of a knowledgeable and dependable attorney.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
We don’t play defense—we go on the attack. At the Law Office of Matthew W. Peterson, we fight relentlessly for your freedom across Rockingham County and New Hampshire, including Brentwood, Candia, Derry, Hampton, Portsmouth, and Salem. Criminal charges don’t scare us. We bring precision, power, and results. No excuses. No compromises. Just a battle-tested defense that wins.
We thoroughly examine your case to understand the details that shape your defense.
We craft a tailored strategy to help you win your case efficiently.
Once retained, we start building your defense with expert guidance and unwavering support.