Criminal Defense Lawyer Charleston SC, Personal Injury, DUI, Mastantuno Law Firm

What Customers Are Saying

Tyler Cotterill

Great lawyer! Helped me when I really needed it.

William Drew

This is your man! Thank you Mr.Mastantuno your professionalism and patience helped me in a time of confusion.

Carol Bruton

It was a great experience. Everyone was very professional and kind. Attorney Mastantuno 'just handled the business'. He did a fantastic job!

Daunte Hall

Great attorney that will go to bat every time for his client I would give more stars if I could thanks Allen from Mr.Leslie.

Caroline M Pettigrew

Allen was very professional, informative, and kind throughout my DUI case. He was attentive and regularly responsive to my emails and phone calls! Allen took a very bad, bad situation and got a very good, good result! I can’t thank him enough!

Geisy Adriany De Almeida Barbosa

Super indico

Chalo Hernandez

This place got me the information I needed quick and easy.

DeeCeeCover s

This is a very knowledgeable lawyer who is easy to work with and gets back to you in a timely manner.

Sam F

Allen represented me in an accident case in which he did a fantastic job. First of all he gave me more money off of the total than he was required to. In the beginning of a criminal defense case, that he is also handling for me, he worked with me on the fees and was way more than patient. Can’t say enough good things about him as a professional and a person with integrity. Y’all, hire him! Highly recommended!

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J. ALLEN MASTANTUNO

The legal system is incredibly complex, so at the Mastantuno Law Firm our entire practice is focused on Criminal Defense, DUI Defense and Personal Injury cases.

If you have been charged with a crime your liberty and reputation are at stake. You need someone with the experience and reputation to achieve positive results. Together with a team of investigators, forensic consultants and office staff, Allen Mastantuno will ensure no stone is left unturned.

Protecting Your Rights. Fighting for Your Future.

At Mastantuno Law Firm, we deliver experienced, aggressive legal representation in criminal defense, DUI defense, and personal injury law throughout the greater Charleston area. Whether you're facing life-changing criminal charges or pursuing compensation after a serious accident, attorney Allen Mastantuno brings trusted, trial-tested advocacy to every case.

Personal Injury Representation

If you’ve been injured due to someone else’s negligence, Mastantuno Law Firm is here to help you recover physically, emotionally, and financially. We represent victims in personal injury cases involving car accidents, motorcycle accidents, slip and falls, wrongful death, and more.

We proudly serve injury victims across Charleston, Mount Pleasant, and beyond with compassionate, results-oriented legal support.

About Personal Injury

Criminal Defense

If you've been arrested or charged with a crime in South Carolina, the consequences can be severe. Jail time, loss of your license, a permanent criminal record, and more. We handle a wide range of criminal defense matters, including drug possession, assault and battery, weapons charges, theft crimes, and probation violations. We fight to protect your rights and work toward the best possible outcome.

Serving clients across Charleston, Mount Pleasant, and North Charleston, we provide personalized strategic criminal defense strategies backed by years of courtroom experience.

About Criminal Defense

DUI & DUAC Defense

A DUI or DUAC charge in South Carolina can have lasting consequences for your career, reputation, and freedom. Our firm offers aggressive defense for those accused of driving under the influence, driving with an unlawful alcohol concentration, and refusing a breath test.

If you have been charged with a DUI in Charleston, it’s critical to act fast. Driver’s license suspensions and court dates happen quickly. Let our firm defend your record and your rights.

About DUI & DUAC Defense

Mastantuno Law Firm is committed to delivering honest communication, clear strategy, and tireless advocacy in every case. Whether you're fighting a criminal charge or recovering from a serious injury, contact us today to schedule a confidential consultation and get a proven Charleston attorney in your corner.

Serious Injuries Deserve Serious Representation

When someone else’s negligence turns your life upside down, you need more than a law firm that just processes claims. At Mastantuno Law Firm, we represent injured people across South Carolina with focus, urgency, and strategy. From the first call to the final resolution, our job is simple: protect your rights, shoulder the legal burden, and fight for the full compensation you deserve.

South Carolina Slip and Fall Lawyer

Slip and fall accidents are among the most common causes of injury in South Carolina. These accidents can happen in grocery stores, restaurants, apartment complexes, hotels, parking lots, and workplaces. While some falls may seem minor, others result in severe injuries such as broken bones, spinal injuries, or traumatic brain injuries.

Property owners have a legal responsibility to maintain reasonably safe conditions for visitors. When they fail to fix dangerous hazards or warn people about unsafe conditions, they may be held responsible for the injuries that result.

Car Accident Personal Injury Representation

Car accidents are one of the leading causes of serious injuries across South Carolina. Whether it’s a minor collision or a major crash, the impact can be life-changing. Medical bills, lost income, and ongoing pain can quickly add up.

At Mastantuno Law Firm, we represent individuals who have been injured in car accidents and help them pursue the compensation they deserve. Every case is different, and understanding how your accident happened is key to building a strong claim.