Atty. John J. Mason

Atty. John J. Mason

John J. Mason is a seasoned criminal defense attorney dedicated to representing clients throughout southeast Louisiana, including St.

Kenner Kenner 17 yrs experience 17 year
Call (504) 291-9384 Book Appointment

Profile Summary

About John J. Mason at a glance

John J. Mason is a Senior Partner based in Kenner, Louisiana, practicing at The Barry S. Ranshi Law Firm, LLC. They have 17+ years of legal experience, licensed to practice since 2009. Their practice focuses on personal injury and criminal defense. Admitted to practice in Texas (2009) and Louisiana (2010). Educated at University New Orleans College of Law J.D. (—) and University of Louisiana at Lafayette Ph.D. (—). Serands clients in Kenner, LA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John J. Mason is a seasoned criminal defense attorney dedicated to representing clients throughout southeast Louisiana, including St. Tammany, Tangipahoa, Lafourche, Terrebonne, Orleans, Jefferson, East Baton Rouge, Washington, and St. Mary Parishes
  • Mr. Mason’s academic achievements include a Bachelor’s degree from Louisiana State University, followed by both a Master’s and PhD from the University of Louisiana at Lafayette, and a Juris Doctor from Loyola University New Orleans College of Law
  • With a foundation in diverse legal disciplines, including prior service as a United States Patent Attorney in Washington, D.C., and experience as a law clerk to Judge Paulette Irons in Orleans Civil District Court, Mr. Mason brings both precision and tenacity to his practice
  • He is recognized for his pragmatic, fearless representation, whether negotiating favorable plea agreements or litigating cases at trial
  • Licensed in both Louisiana and Texas, Mr. Mason provides principled, effective advocacy for clients facing serious criminal charges

Practice Areas Explained

John J. Mason's Areas of Practice

Each practice area below reflects the types of cases John J. Mason handles, with a brief overview of what that area of law covers.

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.

John J. Mason is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Louisiana →

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.

John J. Mason is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Louisiana →

Jurisdictional Context

Why local counsel matters in Louisiana

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

Looking for additional Louisiana attorneys? Browse all attorneys in Kenner or all attorneys in Louisiana.

Frequently Asked

Common questions about John J. Mason

Where is John J. Mason's law office located?
John J. Mason's law practice is located in Kenner, Louisiana. The firm is The Barry S. Ranshi Law Firm, LLC. You can contact the office directly through this profile page.
What practice areas does John J. Mason handle?
John J. Mason focuses on personal injury, criminal defense. Each practice area listed reflects experience handling cases of that type in Louisiana.
How long has John J. Mason practiced law?
John J. Mason has 17+ years of legal experience and has been licensed since 2009.
Where did John J. Mason go to law school?
John J. Mason earned their education at (—); (—).
How can I contact John J. Mason for a consultation?
You can contact John J. Mason 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.

Practice Areas

Education

University New Orleans College of Law J.D.
- In Progress
University of Louisiana at Lafayette Ph.D.
- In Progress

Bar Admissions

Texas
Admitted: 2009
Louisiana
Admitted: 2010

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