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MANGAN LAW

EXPERT Military Legal Representation

Your Service Deserves the Best Defense

MANGAN LAW

Criminal Investigations

Administrative Investigations

Military Medical Privileging/Credentialing

Adverse Administrative Actions

Court-Martial Representation

Mangan Law

The Law Offices of Sean F. Mangan, PLLC

Your Service Deserves the Best Defense

When the system turns on you, turn to Mangan Law.

200+RECENT CASES

ACROSS ALL MILITARY BRANCHES

30+years

of experience in military and criminal justice systems

You dedicated yourself to serving the Nation. You deserve an attorney equally dedicated to serving you. Lieutenant Colonel (Retired) Sean F. Mangan brings 30+ years of unparalleled military and criminal justice expertise to protect your career and future. An LLM-holding, Army Certified “Master Military Justice Practitioner,” Sean Mangan has handled hundreds of different military cases in his 20+ years of practicing law following his years of prior law enforcement experience. Mangan Law aggressively and decisively meets your legal needs with dedication and skill.

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Practice areas

The Law Offices of Sean F. Mangan, PLLC

Our Legal Services

Mangan Law exclusively represents Uniformed Military Personnel, DOD Civilians, and civilian Law Enforcement Officers. Specialties include:

ALL PRACTICE AREAS

Mangan Law

Master Practitioner

Why Choose Sean F. Mangan?

When your career is under attack, don’t settle for average representation. This is your life and your future. Hire the best. Sean Mangan is not just another ex-JAG military law attorney. He is a recognized expert in his field. With a distinguished 24-year active-duty Army career and 30+ total years in law and criminal justice, Sean has worked every facet of the military and criminal justice systems, on the street and in the courtroom, in local, state, and federal courts. He has tried cases from both sides and has taken them up on appeal. He has ruled on matters as a Military Magistrate and presided over trials as a Military Judge. Unlike other trial attorneys, Sean Mangan’s perspective extends far beyond the courtroom. A former law enforcement officer, Sean Mangan also taught as Professor of Military Criminal Law at America’s only ABA-Certified JAG School and advised senior leaders at the Pentagon as a Senior Criminal Law Policy Attorney. Sean Mangan’s expertise is simply unmatched.

Choosing Mangan Law means securing more than just a military defense attorney. You gain a steadfast ally, a seasoned strategist, and a fierce advocate who leverages a comprehensive understanding of the system to fight for you.

Mangan Law delivers results-driven representation for those who defend America, ensuring a decisive and comprehensive defense.

24years

active-duty Army career

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Sean Mangan

Lieutenant Colonel, U.S. Army (Retired)

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Criminal Investigations

Administrative Investigations

Military Medical Privileging/Credentialing

Adverse Administrative Actions

Court-Martial Representation

testimonials

The Law Offices of Sean F. Mangan, PLLC

Our Satisfied Clients

Hear from those who have walked the path of legal challenges with us. Their stories speak volumes about our unwavering empathetic approach and the life-changing outcomes they have experienced thanks to our skilled representation.

Military Criminal Investigations

“I highly recommend Sean! I was falsely being accused of numerous things from the Army CID and he represented me in the best way possible. He stayed on top of the situation and made sure to stay in contact often updating me along the way. He absolutely took all the stress off my shoulders and reassured me he’s there for every step along the way. If you’re in the military and need legal representation I 100% recommend Sean. He went above and beyond to make sure all needs were met.”
— Career NCO (Regular Army): Still Serving Today

Sexual Assault Allegations

“Sean saved my life. This was the best investment I have ever made. Sean’s extensive 20+ year military career as a Judge and Appellate Counsel, as well as serving as a both Prosecutor and Defense Counsel, gave me the confidence to pull the trigger and hire him. He exceeded expectations and truly had my best interest in mind the entire time. I was facing 20+ years in prison with the charges I was accused of. Sean fought for me and got every major charge dismissed.”
— Air Force Captain and Court-Martial Client: Sexual Assault Charges Dismissed

“BEAST IN THE COURT ROOM”

“Truly the best! Before we hired Sean, we thought our son’s future was over. Sean was an absolute beast in court room defending our son against the Government! His knowledge and commitment to his clients are remarkable and worth every penny! I’m thankful that we made the decision to hire Sean when we did.“
— Parent of Airman at General Court-Martial: All Charges Dismissed

NAVY BOARD OF INQUIRY

"Mr. Mangan came well prepared to the BOI and worked with me on making a plan for how to best present the facts of the case. He effectively interviewed my witnesses and helped guide my personal testimony. I found him to be compelling, articulate, and highly effective. I had gone into the BOI confident that the facts of the case were in my favor, but of course nervous that my military career hung in the balance. It was clear he took his responsibilities to me as my counsel seriously and made sure my story was heard by the Board members. Thanks to his assistance, not only was I retained but the Board unanimously found that the accusations against me were not credible. Due to this, I can now continue on my with my career. Thank you, Mr. Mangan."
— Navy physician (LCDR) falsely accused of Sexual Assault: All charges unfounded by BOI

OUTSTANDING MILITARY ATTORNEY

“If my career is on the line or the career of one of my Soldier's, Sean is the lawyer I am calling first. He is the #1 Lawyer who will fight for you!“
— Army Field Grade Officer, falsely accused of espionage

SHOW CAUSE BOARD

“I was up against huge odds. I thought my career (and frankly my life) was over. While this was happening I was also navigating through a divorce. Sean was professional, well-spoken, and quite frankly performed some legal jujitsu. I was up against and officer elimination board of which I am 100% convinced I would not have had the same outcome had I not hired Sean. I cannot stress this enough: Please do yourself a favor and do not navigate the UCMJ system alone. Hire Sean Mangan.“
— Army Special Operations Officer, Retained at Show Cause Board
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The Law Offices of Sean F. Mangan, PLLC

Frequently Asked Questions

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Master Military Justice Practitioner

Mangan Law

The Law Offices of Sean F. Mangan, PLLC

Proactive intervention early to favorably resolve cases without litigation or formal action

Aggressive and advanced pretrial and trial litigation tactics

Master Military Justice Practitioner

Unmatched diversity of experience, having handled criminal cases from every angle

Respected
standing with all military services

I am ready to fight for you!

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