Atty. Dennis E. O'Neill

Atty. Dennis E. O'Neill

Dennis E. O'Neill is a lawyer practicing personal injury law, criminal law, real estate and 6 other areas of law.

Mount Pleasant Mount Pleasant 48 yrs experience 48 year
Call (854) 258-5347 Book Appointment

Profile Summary

About Dennis E. O'Neill at a glance

Dennis E. O'Neill is a Member based in Mount Pleasant, South Carolina, practicing at O'Neill Law Firm, LLC. They have 48+ years of legal experience, licensed to practice since 1978. Their practice focuses on dui/dwi, contracts, personal injury, criminal defense, and real estate. Admitted to practice in South Carolina (1978). Educated at University of South Carolina School of Law (J.D., 1978) and University of South Carolina (B.A., 1975). Recognitions include BV Distinguished. Active member of Charleston County and American Bar Associations South Carolina Bar South Carolina Trial Lawyers Association. Serands clients in Mount Pleasant, SC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Dennis E. O'Neill is a lawyer practicing personal injury law, criminal law, real estate and 6 other areas of law
  • Dennis received a B.A. degree from University of South Carolina in 1975, and has been licensed for 48 years
  • Dennis practices at O'Neill Law Firm, LLC in Mount Pleasant, SC

Practice Areas Explained

Dennis E. O'Neill's Areas of Practice

Each practice area below reflects the types of cases Dennis E. O'Neill handles, with a brief overview of what that area of law covers.

DUI / DWI Defense

Find experienced DUI and DWI defense attorneys near you. Compare verified profiles, read client reviews, and consult about your case for free.

Dennis E. O'Neill is one of 29,976 dui/dwi attorneys indexed nationally. Browse dui/dwi attorneys in South Carolina →

Contracts

Dennis E. O'Neill is one of 76,762 contracts attorneys indexed nationally. Browse contracts attorneys in South Carolina →

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

Dennis E. O'Neill is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in South Carolina →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

Dennis E. O'Neill is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in South Carolina →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Dennis E. O'Neill is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in South Carolina →

Jurisdictional Context

Why local counsel matters in South Carolina

Practicing law in South Carolina. Legal matters in South Carolina are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Mount Pleasant are typically filed in the local municipal court or the appropriate South Carolina state district court, depending on subject matter and amount in controversy. An attorney licensed in South Carolina brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in South Carolina courts without local counsel or pro hac vice admission.

Looking for additional South Carolina attorneys? Browse all attorneys in Mount Pleasant or all attorneys in South Carolina.

Frequently Asked

Common questions about Dennis E. O'Neill

Where is Dennis E. O'Neill's law office located?
Dennis E. O'Neill's law practice is located in Mount Pleasant, South Carolina. The firm is O'Neill Law Firm, LLC. You can contact the office directly through this profile page.
What practice areas does Dennis E. O'Neill handle?
Dennis E. O'Neill focuses on dui/dwi, contracts, personal injury, criminal defense, real estate. Each practice area listed reflects experience handling cases of that type in South Carolina.
How long has Dennis E. O'Neill practiced law?
Dennis E. O'Neill has 48+ years of legal experience and has been licensed since 1978.
Where did Dennis E. O'Neill go to law school?
Dennis E. O'Neill earned their education at (J.D., 1978); (B.A., 1975).
How can I contact Dennis E. O'Neill for a consultation?
You can contact Dennis E. O'Neill directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Dennis E. O'Neill received?
Dennis E. O'Neill's notable recognition includes: BV Distinguished.

Education

J.D.
University of South Carolina School of Law
- 1978
B.A.
University of South Carolina
- 1975

Awards

BV Distinguished

Bar Admissions

South Carolina
Admitted: 1978

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