J. Allen Mastantuno

171 Church Street, #160
Charleston, South Carolina 29401
843.720.3741 (P)
843.577.0460 (F)




Criminal defense attorney J. Allen Mastantuno was born and raised in Charleston, South Carolina. He graduated from the College of Charleston and from the University of South Carolina School of Law.  After graduating law school Allen clerked for the Federal Public Defender’s Office in Charleston, South Carolina gaining valuable experience in the Federal criminal system.  From 2008 to 2010, Allen worked as a prosecutor for South Carolina’s 9th Judicial Circuit which includes Charleston & Berkeley County.  In this capacity Allen became the lead DUI prosecutor in the Berkeley County office and handled over one hundred DUI cases ranging from DUI 1st Offense to Felony DUI Involving Death.  As a prosecutor, Allenwas extremely active in the courtroom trying complex, time-consuming cases including serious offenses such as Armed Robbery and Burglary.  While earning his reputation as a hard fighting trial attorney,  Allen also assisted with and prosecuted hundreds of other cases ranging from murder to traffic violations.

Goose Creek Criminal Defense Attorney

Allen is Of Counsel with Miller|Conway and is the sole managing member of Mastantuno Law Firm, LLC.  Allen personally handles every aspect of each client’s case.  As a Charleston and Goose Creek criminal defense attorney Allen represents individuals accused of DUI, murder, manslaughter, drug charges, gun charges and domestic violence.  Allen joined Miller|Conway as Of Counsel in April 2012.


Licensure and Court Admissions

South Carolina
United States District Court for the District of South Carolina


University of South Carolina School of Law, Juris Doctor
College of Charleston, Bachelor of Arts

Honors and Awards

Martindale-Hubbell AV Preeiminent Rated
American Society of Legal Advocates Top 40 Lawyers Under 40
The National Trial Lawyers Top 100 Trial Lawyers (2013)
The National Trial Lawyers Top 100 Criminal Defense Trial Lawyers (2015)

Professional Associations & Memberships

American Bar Association, Member
South Carolina Bar Association, Member
Charleston County Bar Association, Member
South Carolina Association of Criminal Defense Attorneys, Member
Charleston County Association of Criminal Defense Attorneys, Member

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