Av. John William Mannix

Av. John William Mannix

John William Mannix is a lawyer practicing general civil law, trial practice, administrative law and 5 other areas of law. John William received a B.S. degree from Georgetown University in 1954, and has been licensed for 66 years.

Washington Washington 66 Yıl Deneyim 66 yıl
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Profile Summary

About John William Mannix at a glance

John William Mannix is a probate, employment, business, real estate, and construction attorney based in Washington, District of Columbia. They have 66+ years of legal experience, licensed to practice since 1960. Admitted to practice in District of Columbia (1960), U.S. Court of Appeals for the District of Columbia Circuit (1960), U.S. Court of Military Appeals (1968), and U.S. District Court for the District of Maryland (1975). Educated at Georgetown University (J.D., 1960) and Georgetown University (B.S., 1954). Recognitions include AV Preeminent. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Hakkında

  • John William Mannix is a lawyer practicing general civil law, trial practice, administrative law and 5 other areas of law
  • John William received a B.S. degree from Georgetown University in 1954, and has been licensed for 66 years
  • John William practices in Washington, DC

Practice Areas Explained

John William Mannix's Areas of Practice

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

Probate

John William Mannix is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in District of Columbia →

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

John William Mannix is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in District of Columbia →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

John William Mannix is one of 501,317 business attorneys indexed nationally. Browse business attorneys in District of Columbia →

Real Estate Law

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

John William Mannix is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in District of Columbia →

Construction Law

John William Mannix is one of 40,689 construction attorneys indexed nationally. Browse construction attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

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

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about John William Mannix

Where is John William Mannix's law office located?
John William Mannix's law practice is located in Washington, District of Columbia. You can contact the office directly through this profile page.
What practice areas does John William Mannix handle?
John William Mannix focuses on probate, employment, business, real estate, construction. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has John William Mannix practiced law?
John William Mannix has 66+ years of legal experience and has been licensed since 1960.
Where did John William Mannix go to law school?
John William Mannix earned their education at (J.D., 1960); (B.S., 1954).
How can I contact John William Mannix for a consultation?
You can contact John William Mannix 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 William Mannix received?
John William Mannix's notable recognition includes: AV Preeminent.

Eğitim

J.D.
Georgetown University
- 1960
B.S.
Georgetown University
- 1954

Ödüller

AV Preeminent

Bar Admissions

District of Columbia
Admitted: 1960
U.S. Court of Appeals for the District of Columbia Circuit
Admitted: 1960
U.S. Court of Military Appeals
Admitted: 1968
U.S. District Court for the District of Maryland
Admitted: 1975
U.S. Court of Appeals for the Fourth Circuit
Admitted: 1980
U.S. Claims Court and U.S. Court of Appeals for the Federal Circuit
Admitted: 1983

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