Contact David J. Grimaldi

675 Massachusetts Avenue, 9th Floor
Cambridge, MA 02139


David J. Grimaldi


Attorney David J. Grimaldi provides outstanding representation to clients across Greater Boston and Massachusetts. Specializing in criminal defense, he is committed to achieving the absolute best possible results for his clients. Attorney Grimaldi’s knowledge of the law, courtroom experience, meticulous preparation, and passion for justice have earned him the trust of his clients and the respect of the legal community.


Attorney Grimaldi is an experienced trial lawyer who has successfully defended many clients. He has won ‘not guilty’ verdicts on charges including Armed Assault in Dwelling, Armed Robbery, Attempted Murder, Armed Assault with Intent to Murder, Assault with Intent to Rape, Assault with Intent to Rape a Child, Assault and Battery, Assault and Battery on a Police Officer, Assault with a Dangerous Weapon, Assault and Battery with a Dangerous Weapon (ABDW), Aggravated ABDW, Carrying a Loaded Firearm, Disseminating Harmful Matter to a Minor, Home Invasion, Indecent Assault and Battery on a Child, Malicious Destruction of Property, Mayhem, Motor Vehicle Homicide, Murder, Possession of a Firearm without a License, Possession of Ammunition without an FID card, Procurement of Citizenship Contrary to Law, Rape, Rape of a Child, Unarmed Robbery, Witness Intimidation, and other charges.

In a landmark ruling, Attorney Grimaldi was the first lawyer in the history of Massachusetts to win judicial immunity for defense witnesses in a criminal case. View Article

Attorney Grimaldi’s history of success at trial has earned him the rare and prestigious certification to accept murder cases in Massachusetts.   He is also a member of the Criminal Justice Act panel of federal defense lawyers.


Attorney Grimaldi always fights to dismiss unfair charges against his clients. He has successfully argued motions to dismiss charges of drug possession, drug distribution, drug trafficking, violent offenses, firearms offenses, sexual offenses, computer and internet offenses, and many other charges.


Attorney Grimaldi has successfully moved to suppress evidence from many of his clients’ cases.  He has won suppression of cocaine, heroin, and marijuana on numerous occasions by proving that the police illegally searched his clients, their cars, or their homes. He has also won motions to suppress firearms and ammunition, including large capacity weapons.  By winning suppression of the evidence in these cases, Attorney Grimaldi also won dismissal of the charges for his clients.

Attorney Grimaldi has extensive experience in challenging police interrogation and investigative practices.  He has successfully moved to suppress his clients’ statements to police by proving that the police coerced the statements and violated his clients’ constitutional rights.  He has also won motions to suppress witness identifications of his clients by proving that the police used unconstitutional methods to obtain the identifications.  Attorney Grimaldi has achieved significant success in suppressing electronic and computer evidence, including suppression of evidence from his clients’ cell phones and online social networking accounts.


  • Attorney Grimaldi practices in courts throughout Massachusetts, including Superior Court, District Court, Boston Municipal Court, and Federal Court.

  • In Superior Court, Attorney Grimaldi has practiced in Suffolk Superior Court (Boston), Middlesex Superior Court (Woburn), Essex Superior Court (Salem and Lawrence), Norfolk Superior Court (Dedham), Plymouth Superior Court (Brockton), Bristol Superior Court (Fall River and New Bedford), and Hampden Superior Court (Springfield).

  • In the District and Municipal Courts, Attorney Grimaldi has practiced in Boston Municipal Court, Brighton, Brockton, Cambridge, Charlestown, Chelsea, Dedham, Dorchester, Framingham, Gloucester, Hingham, Lynn, Lawrence, Malden, New Bedford, Newburyport, Newton, Peabody, Plymouth, Roxbury, Salem, Somerville, South Boston, Stoughton, Waltham, Westborough, Woburn, and Wrentham.

  • Attorney Grimaldi frequently practices in Federal District Court in Boston.


  • Attorney Grimaldi has earned the rare and prestigious certification to accept murder case appointments in Massachusetts.

  • Attorney Grimaldi is a member of the Criminal Justice Act (CJA) Panel of lawyers who practice in Federal District Court.

  • Attorney Grimaldi is a member of the Massachusetts Association of Criminal Defense Lawyers (MACDL) and the Massachusetts Bar Association (MBA).

  • Selected as a “Rising Star” in criminal defense by Super Lawyers magazine.


  • Boston College Law School, J.D.

    • Outstanding Promise of Professional Achievement (awarded at graduation)

    • National Mock Trial Team Member

    • Mock Trial Competition Finalist

  • National Criminal Defense College (NCDC) Trial Practice Institute

  • Clark University, B.A. Magna Cum Laude

  • London School of Economics and Political Science, yearlong study abroad program

  • Attorney Grimaldi has taught and presented at numerous legal education seminars and conferences.  He has chaired the Warrant and Warrantless Search and Seizure Seminar for Massachusetts Continuing Legal Education (MCLE) and has been a panel member at several other MCLE seminars.  He also teaches at various conferences and training programs for lawyers at the Committee for Public Counsel Services (CPCS).


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