Attorney Matthew Kelley is a former prosecutor who leads the offices dynamic and highly successful criminal defense practice. Matthew has represented clients in a broad range of criminal defense matters ranging from complex felonies to misdemeanors.

Regardless of the charge, Attorney Kelley prides himself on the personal attention he pays to each one of his clients. Matthew draws on over a decade of experience in courtrooms all across Massachusetts to develop a strategy specific to each client’s unique set of circumstances and needs. Upon retaining Attorney Kelley, clients can expect a comprehensive analysis of their particular case and an honest assessment of the best course of action to follow. Combining a deep understanding of the criminal process with a proven track record of success on trial matters, Attorney Matthew Kelley is considered one of the best criminal defense attorney’s in the region.

Matthew graduated from Davidson College in 2002 and went on to earn his law degree from Suffolk University in 2005. He was admitted to the Massachusetts Bar in 2005 and is licensed to practice in Massachusetts.

Attorney Kelley was hired as Assistant District Attorney in the Cape Islands District Attorney’s Office upon graduation from law school. During his distinguished career in the District Attorney’s Office Attorney, Kelley prosecuted cases in both the District and Superior Court. Matthew’s trial experience ranges from misdemeanors offenses such as Driving While Under the Influence of Alcohol (DUI), Traffic Violations, Larceny Offenses, Assault and Battery and simple narcotic offenses to the more serious felonies of Motor Vehicle Homicide, Rape, Armed Robbery and Trafficking in Narcotics. During his time in the District Attorney’s Office, Kelley prosecuted some of the Cape’s most high-profile criminal cases, presented matters to Grand Juries, led a Judicial Inquest and served as lead counsel on hundreds of criminal cases.

In 2009, Attorney Kelley was appointed Chief District Prosecutor for the Cape and Islands District Attorney’s Office. In that capacity, Kelley supervised the District Courts located in Falmouth, Barnstable, Orleans, Nantucket and Martha’s Vineyard. He conducted a nine- month training program with local police departments instructing officers on report writing and testifying in court, spoke at numerous community events, prosecuted major felonies in Superior Court, argued to the Appellate Division of the Superior Court and was recognized for his outstanding contributions to the District Attorney’s Office at the annual state wide Prosecutor’s conference.

Since departing from the District Attorney’s Office in 2011, Attorney Kelley has established himself as one of the best defense attorney’s in the region. Matthew has committed himself to providing his clients with the highest level of legal representation. Attorney Kelley has successfully defended clients charged with a variety of criminal matters from major felonies in Superior Court to motor vehicle infractions in District Court. Always the trial attorney, Kelley prides himself on winning cases at trial that cannot be settled favorably for his clients through negotiation. Whether a magistrate hearing, an evidentiary motion or a jury trial, Kelley delivers elite level representation to his clients. His history as a prosecutor together with his experience as a criminal defense attorney has proven invaluable in getting his clients the best results possible.


  • Suffolk University Law School - J.D. - 2005
  • Davidson College - B.A. - 2002
  • Harwich High School - Diploma - 1998

Professional & Bar Association Memberships

  • Barnstable County Bar Association

    Member Since: 2012

  • Massachusetts Bar Association

    Member Since: 2017

  • Massachusetts Academy of Trial Attorneys

    Member Since: 2017

Client Reviews

Matt knows how to prosecute a case which makes a uniquely valuable advocate. I highly recommend Matt Kelley to anyone in need of legal services.

- Joseph Casey, Retired Probation Officer

"Attorney Kelley shined a light for me during a dark situation. He was thorough and honest and gave me a voice and a confidence in a situation that I couldn't navigate."

- JG, Yarmouth

"I was extremely lucky to meet Matthew Kelley as I was waiting for my arraignment, and would like to offer the highest possible recommendation for him to represent anyone that requires a criminal defense attorney. It was my first time dealing with the legal system- I was completely overwhelmed and...

- L.K., West Barnstable

“Matthew Kelley was consummate professional while handling my case. He was honest and realistic with his vision on how to proceed. I would recommend his services to anyone. “

- JD, East Dennis

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