Contact Information
72 Clifford St #300 Providence, Rhode Island 02903
Detailed Information

Attorney Calcagni is an extremely experienced and skilled criminal defense trial lawyer. Before entering private practice, he formerly served as a military prosecutor in the U.S. Army JAG Corps and Special Assistant U.S. Attorney with the U.S. Department of Justice and U.S. Attorney’s Office for the Northern District of New York. Attorney Calcagni is admitted to practice in state and federal courts in Rhode Island, Massachusetts, New York, Connecticut, and Florida. He is admitted in other U.S. District Courts, the U.S. Courts of Appeals for the First and Second Circuits, and also in the United States Supreme Court.

As a former federal prosecutor, Attorney Calcagni prosecuted countless cases involving charges of drug use, drug possession, drug distribution, and drug trafficking; simple and domestic assault; battery; assault and battery; domestic battery; felony assault; assault with deadly weapons; assault with dangerous weapons; gang-related assault; manslaughter; murder; attempted murder; possession of child pornography, receipt of child pornography, manufacture or creation of child pornography and distribution of child pornography; solicitation of minors and indecent solicitation of minors; child abuse; child molestation, rape; sexual assault; statutory rape; indecent assault; indecent assault and battery; weapons-related charges; firearms charges; burglary; breaking and entering; robbery; theft of government property; possession of bomb-making materials; terrorism-related offenses; fraud; identity fraud; larceny; destruction of property; financial crimes; traffic violations; driving while under the influence of alcohol or drugs; trespassing; conspiracy; and attempt-related offenses.

Attorney Calcagni now uses the extensive investigation and trial experience he acquired as a federal prosecutor to represent his clients in Criminal Defense matters in State, Federal and Military Courts. He has more individual trial experience than most other attorneys in the market. He also has a well-known and proven track record of not guilty verdicts, acquittals, and lenient sentences, even for the most serious crimes.

If you are charged with a crime in state, federal or military court, call Attorney John L. Calcagni III today for a free consultation.


  • U.S. Army Judge Advocate General’s Legal Center and School, Charlottesville, VA (2004)
  • Roger Williams University School of Law, Bristol, RI (2003, magna cum laude)
  • Bryant University, Smithfield, RI (2000, cum laude)
  • Classical High School, Providence, RI (1996)


  • U.S. Army Reserves – Judge Advocate General’s Corps (2008-Present)
  • U.S. Army Trial Defense Service, Senior Defense Counsel
  • U.S. Army Trial Defense Service, Deputy Regional Defense Council
  • U.S. Army – Judge Advocate General’s Corps. (2004-2008)
  • Office of the Staff Judge Advocate
  • 10th Mountain Division (Light Infantry), Fort Drum, New York
  • Senior Trial Counsel (2007-2008)
  • Chief, Military Justice (2006-2007)
  • Trial Counsel (2005-2006)
  • Special Assistant U.S. Attorney (2004-2008)

Admitted to practice in:

  • Rhode Island (2003)
  • Massachusetts (2003)
  • Connecticut (2005)
  • New York (2005)
  • Florida (2008)
  • U.S. District Court for Northern District of New York (2004)
  • U.S. District Court for Eastern District of New York (2010)
  • U.S. District Court for Southern District of New York (2010)
  • U.S. District Court for the District of Rhode Island (2008)
  • U.S. District Court for the District of Massachusetts (2008)
  • U.S. District Court for the District of Connecticut (2009)
  • U.S. District Court for the District of Columbia (2010)
  • U.S. District Court for the District of North Dakota (2017)
  • U.S. Court of Appeals for the First Circuit (2004)
  • U.S. Court of Appeals for the Second Circuit (2011)
  • U.S. Army Court of Criminal Appeals (2011)
  • U.S. Court of Appeals for the Armed Forces (2011)
  • U.S. Supreme Court (2009)