J. Allen Mastanuno - Charleston, SC
Attorney at Mastantuno Law Firm, LLC
Criminal Defense Lawyers in Charleston, SC
171 Church Street Suite 160 Charleston, SC 29401
Charleston Criminal Defense Lawyer
Updated: 06/03/2026
Areas of Practice
- Criminal Defense
Attorney Information
Overview
Allen Mastantuno was born and raised in Charleston, SC. He graduated from the College of Charleston (B.A., 2003) and from the University of South Carolina School of Law (J.D., 2007).
After graduating from law school, he clerked for the Federal Public Defender’s Office in Charleston, SC gaining valuable experience in the Federal criminal system. From 2008 to 2010, Allen worked as a prosecutor for South Carolina’s Ninth Judicial Circuit which includes Charleston & Berkeley County.
He became the lead DUI prosecutor in the Berkeley County office and handled over 100 DUI cases ranging from DUI 1st Offense to Felony DUI Involving Death. As a prosecutor, he was extremely active in the courtroom, trying difficult and lengthy cases including such serious offenses as Armed Robbery and Burglary. While earning his reputation as a hard fighting trial attorney, he also assisted with and prosecuted hundreds of other cases ranging from Murder to traffic violations.
Since 2010, Allen Mastantuno has focused his entire practice on defending his client’s rights. He has successfully represented clients who face serious criminal charges or who have been injured in an accident. Examples of charges Allen Mastantuno has defended include: Murder, Attempted Murder, Armed Robbery, Arson, Criminal Sexual Conduct, Burglary, Felony DUI, Trafficking of Drugs, Manufacturing/Distribution of Drugs, Financial Crimes. If you have been charged with a crime Mastantuno Law Firm, LLC can help.
As a trial attorney, Allen Mastantuno has also helped people who have been seriously hurt. Whether you have been hurt in a car, motorcycle, boat or other vehicular accident Allen Mastantuno can help.
Education
Legal Education
-
University of South Carolina School of Law,
Columbia,
South Carolina, 2007
J.D.
Non Legal Education
-
College of Charleston, 2003
B.A.
Current Employment Position(s)
-
Owner
Past Positions
- Solicitor's Office for South Carolina's 9th Judicial Circuit, Prosecutor, 2008 - 2010
- Federal Public Defender’s Office in Charleston, SC, Clerk
Classes and Seminars
- DUI Legal Training for Berkeley County Law Enforcement, 2009
Other Affiliations
- South Carolina Bar Association
- American Bar Association
- Charleston County Bar Association
- South Carolina Association of Criminal Defense Lawyers
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