Atty. John Michael McKenna

Atty. John Michael McKenna

John M. McKenna is a partner in the law firm of Brennan McKenna Mitchell & Shay, Chartered with offices in Greenbelt and Glen Burnie, Maryland.

Greenbelt Greenbelt 32 yrs experience 32 year
Call (667) 380-2899 Book Appointment

Profile Summary

About John Michael McKenna at a glance

John Michael McKenna is a Partner based in Greenbelt, Maryland, practicing at Brennan McKenna & Lawlor, Chtd.. They have 32+ years of legal experience, licensed to practice since 1994. Their practice focuses on dui/dwi, criminal defense, federal crimes, white collar, and sex crimes. Admitted to practice in Maryland (1994). Educated at University of Baltimore School of Law (J.D., 1994) and Salisbury State University (B.A., 1990). Recognitions include Peer Reviewed. Active member of Prince George's County, Anne Arundel County and Maryland State Bar Associations. Serands clients in Greenbelt, MD and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John M. McKenna is a partner in the law firm of Brennan McKenna Mitchell & Shay, Chartered with offices in Greenbelt and Glen Burnie, Maryland
  • His practice is heavily focused on state court criminal defense and complex personal injury litigation
  • Mr. McKenna has spent his entire career practicing in suburban Maryland and the surrounding jurisdictions
  • He has been involved in countless jury trials throughout Maryland’s state courts ranging from serious motor vehicle offenses to death penalty litigation
  • Mr. McKenna has handled a myriad of state court trials including narcotics cases, serious child abuse and sex offense cases (including child pornography prosecutions), and murder charges
  • Other criminal trial work includes cases before Federal Magistrates in the U.S
  • District Court in Greenbelt, Maryland and at Andrews Air Force Base
  • Mr. McKenna has handled military courts martial at various military institutions including Quantico and Fort Meade, and he has defended University of Maryland students on code of conduct violations
  • Mr. McKenna has successfully argued briefs on behalf of his clients before Maryland appellate and federal courts
  • In addition, Mr. McKenna has dealt with coram nobis proceedings relating to immigration consequences for individuals with criminal convictions
  • Mr. McKenna graduated cum laude from the University of Baltimore School of Law in 1994, and clerked for the Honorable E. Allen Shepherd in the Circuit Court for Prince George’s County, Maryland
  • Before joining the firm of Brennan McKenna Mitchell & Shay, Chartered, Mr. McKenna served as a Felony Trial Attorney for the Office of the Public Defender in Prince George’s County, Maryland
  • Mr. McKenna is a member of the Maryland State Bar, the U.S
  • District Court for Maryland, the U.S
  • Court of Appeals for the Fourth Circuit, and the United States Supreme Court
  • He is also an active member of various legal organizations including the Maryland State Bar Association, the Prince George’s County Bar Association and the Anne Arundel County Bar Association

Practice Areas Explained

John Michael McKenna's Areas of Practice

Each practice area below reflects the types of cases John Michael McKenna 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.

John Michael McKenna is one of 29,976 dui/dwi attorneys indexed nationally. Browse dui/dwi attorneys in Maryland →

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 Michael McKenna is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Maryland →

Federal Crimes

John Michael McKenna is one of 6,773 federal crimes attorneys indexed nationally. Browse federal crimes attorneys in Maryland →

White Collar Crimes

John Michael McKenna is one of 20,025 white collar attorneys indexed nationally. Browse white collar attorneys in Maryland →

Sex Crimes

John Michael McKenna is one of 5,340 sex crimes attorneys indexed nationally. Browse sex crimes attorneys in Maryland →

Jurisdictional Context

Why local counsel matters in Maryland

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

Looking for additional Maryland attorneys? Browse all attorneys in Greenbelt or all attorneys in Maryland.

Frequently Asked

Common questions about John Michael McKenna

Where is John Michael McKenna's law office located?
John Michael McKenna's law practice is located in Greenbelt, Maryland. The firm is Brennan McKenna & Lawlor, Chtd.. You can contact the office directly through this profile page.
What practice areas does John Michael McKenna handle?
John Michael McKenna focuses on dui/dwi, criminal defense, federal crimes, white collar, sex crimes. Each practice area listed reflects experience handling cases of that type in Maryland.
How long has John Michael McKenna practiced law?
John Michael McKenna has 32+ years of legal experience and has been licensed since 1994.
Where did John Michael McKenna go to law school?
John Michael McKenna earned their education at (J.D., 1994); (B.A., 1990).
How can I contact John Michael McKenna for a consultation?
You can contact John Michael McKenna 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 John Michael McKenna received?
John Michael McKenna's notable recognition includes: Peer Reviewed.

Education

J.D.
University of Baltimore School of Law
- 1994
B.A.
Salisbury State University
- 1990

Awards

Peer Reviewed

Bar Admissions

Maryland
Admitted: 1994

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