Atty. Dennis C. O'Brien

Atty. Dennis C. O'Brien

Dennis C. O'Brien is a lawyer practicing trial practice, taxation law, domestic relations law and 1 other area of law.

Marietta Marietta 51 yrs experience 51 year
Call (770) 983-6113 Book Appointment

Profile Summary

About Dennis C. O'Brien at a glance

Dennis C. O'Brien is a Member based in Marietta, Georgia, practicing at Dennis C. O'Brien. They have 51+ years of legal experience, licensed to practice since 1975. Their practice focuses on family law, tax, and litigation. Admitted to practice in Georgia (1975) and Florida (1977). Educated at University of Louisville (J.D. University, 1973) and Bellarmine College (B.A, 1968). Recognitions include AV Preeminent. Serands clients in Marietta, GA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Dennis C. O'Brien is a lawyer practicing trial practice, taxation law, domestic relations law and 1 other area of law
  • Dennis received a degree from Bellarmine College in 1968, and has been licensed for 51 years
  • Dennis practices at Dennis C. O'Brien in Marietta, GA

Practice Areas Explained

Dennis C. O'Brien's Areas of Practice

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

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Dennis C. O'Brien is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in Georgia →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

Dennis C. O'Brien is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Georgia →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Dennis C. O'Brien is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Georgia →

Jurisdictional Context

Why local counsel matters in Georgia

Practicing law in Georgia. Legal matters in Georgia are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Marietta are typically filed in the local municipal court or the appropriate Georgia state district court, depending on subject matter and amount in controversy. An attorney licensed in Georgia 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 Georgia courts without local counsel or pro hac vice admission.

Looking for additional Georgia attorneys? Browse all attorneys in Marietta or all attorneys in Georgia.

Frequently Asked

Common questions about Dennis C. O'Brien

Where is Dennis C. O'Brien's law office located?
Dennis C. O'Brien's law practice is located in Marietta, Georgia. The firm is Dennis C. O'Brien. You can contact the office directly through this profile page.
What practice areas does Dennis C. O'Brien handle?
Dennis C. O'Brien focuses on family law, tax, litigation. Each practice area listed reflects experience handling cases of that type in Georgia.
How long has Dennis C. O'Brien practiced law?
Dennis C. O'Brien has 51+ years of legal experience and has been licensed since 1975.
Where did Dennis C. O'Brien go to law school?
Dennis C. O'Brien earned their education at (J.D. University, 1973); (B.A, 1968).
How can I contact Dennis C. O'Brien for a consultation?
You can contact Dennis C. O'Brien 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 C. O'Brien received?
Dennis C. O'Brien's notable recognition includes: AV Preeminent.

Education

J.D. University
University of Louisville
- 1973
B.A
Bellarmine College
- 1968

Awards

AV Preeminent

Bar Admissions

Georgia
Admitted: 1975
Florida
Admitted: 1977

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