Atty. John Andrew O'Brien

Atty. John Andrew O'Brien

John Andrew O'Brien is a lawyer practicing criminal defense. John has been licensed for 45 years.

Tucson Tucson 45 yrs experience 45 year
Call (520) 675-2346 Book Appointment

Profile Summary

About John Andrew O'Brien at a glance

John Andrew O'Brien is a criminal defense attorney based in Tucson, Arizona. They have 45+ years of legal experience, licensed to practice since 1981. Admitted to practice in Arizona (1981). Serands clients in Tucson, AZ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John Andrew O'Brien is a lawyer practicing criminal defense
  • John has been licensed for 45 years
  • John practices in Tucson, AZ

Practice Areas Explained

John Andrew O'Brien's Areas of Practice

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

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 Andrew O'Brien is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Arizona →

Jurisdictional Context

Why local counsel matters in Arizona

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

Looking for additional Arizona attorneys? Browse all attorneys in Tucson or all attorneys in Arizona.

Frequently Asked

Common questions about John Andrew O'Brien

Where is John Andrew O'Brien's law office located?
John Andrew O'Brien's law practice is located in Tucson, Arizona. You can contact the office directly through this profile page.
What practice areas does John Andrew O'Brien handle?
John Andrew O'Brien focuses on criminal defense. Each practice area listed reflects experience handling cases of that type in Arizona.
How long has John Andrew O'Brien practiced law?
John Andrew O'Brien has 45+ years of legal experience and has been licensed since 1981.
How can I contact John Andrew O'Brien for a consultation?
You can contact John Andrew 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.

Practice Areas

Bar Admissions

Arizona
Admitted: 1981

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