
Criminal Defense Lawyers in Philadelphia, PA
No Matter Where You Live, You Need a Philadelphia Lawyer.
Criminal charges don't stop at city limits or state lines, and neither does your defense. Whether you're facing charges in Philadelphia or calling from somewhere else entirely, Brennan Law Offices brings the reputation that criminal defense lawyers in Philadelphia, PA, are known for to clients wherever they need it. Our firm is sharp, relentless, and ready to fight for you.
Prominently Featured In:
Press
Attorney William Brennan has been featured in local and national media for his courtroom experience and record of results on high-profile criminal cases. His perspective on pressing legal issues has made him a trusted voice on some of the most closely watched matters in criminal law today.

When You Need a Philadelphia Criminal Defense Attorney, We're Ready
For decades, Brennan Law Offices has defended people facing some of life's most serious criminal charges, from local matters to complex federal cases. We believe every client deserves a strong, straightforward defense, regardless of the charge or the circumstances behind it.
We take the time to understand each client's situation and build a defense strategy around it. Based in Philadelphia, we represent clients throughout Pennsylvania and beyond, taking cases wherever the fight is needed most.
Criminal Defense for Every Kind of Charge
We meet every client where they are, then build the strongest possible defense for their case.
Why Hire Brennan Law Offices as Your Philadelphia Criminal Defense Attorney?
Building an effective defense takes more than knowing the law. We have studied how prosecutors build their cases, so we can anticipate their strategy and challenge it early, not just react to it at trial. That means scrutinizing eyewitness accounts, questioning evidence before it's ever presented to a jury, and pursuing every available alternative to incarceration, including reduced charges, mitigated sentences, probation, and other available alternatives.
Whether you're facing a misdemeanor or a felony, we build the same level of defense. We've represented clients in cases ranging from routine traffic and DUI matters to complex federal prosecutions, including cases that have drawn regional and national attention. The scope of the charge changes our strategy, but not our level of commitment to you.
At every stage, from indictment through trial, we keep you informed of where your case stands and what your options are, so decisions about your future are never made in the dark. Our approach has always been to fight to win, and our results speak for themselves, case after case.

Nearly 40 Years of Experience
Deep Criminal Defense Knowledge

5-Star Client Reviews
Consistently Rated by Clients

Client-First Approach
Your Defense, Our Focus

Free Consultations
No Cost to Get Started
A Trial Lawyer Who Fights to Win: The Attorney Behind Your Defense
William Brennan
Attorney
William Brennan has spent nearly 40 years in Pennsylvania courtrooms, building a reputation as an aggressive, unrelenting trial lawyer. He has represented clients in matters ranging from misdemeanors to complex federal cases. That experience is reflected in an AV Preeminent rating from Martindale-Hubbell, a Fellowship with the American College of Trial Lawyers, and 20 consecutive years of Super Lawyers recognition.
But behind the credentials is a lawyer who treats every client the same, regardless of the charge, the circumstances, or who's watching. Attorney Brennan isn't interested in judging your case; he's interested in fighting it. That's the same commitment every client at Brennan Law Offices receives, in the courtroom and beyond.
Prominently Featured In:

Awards and Recognitions







Real Stories From Real Clients
Our firm has persisted for nearly 40 years by providing clients powerful & attentive legal representation for a wide range of issues.
“Having no understanding of the court system I was like a doe caught in a headlight. My spouse had a case serious enough to collapse our life as we knew it. Hats off to Mr. Brennan he was one smooth move. He is in my heart a knowledgeable,, personable, organized, reliable wrecking force to our advisories. Thank you Mr. Brennan today Al is a free man. May you & your family always be blessed with all good things.”
— Leslie
“I Love Bill Brennan!!! Best lawyer in the country. I had 6 felonies and 5 misdemeanors. Very serious charges. They wanted to give me a $1,000,000 bail. I was facing 15 years in prison. I would die in prison. Bill got me released with no bail. When I went to court this week he had all the charges dropped and the case dismissed. I owe this man my life. Thank you sir! Seriously love you man. I am forever in your debt”
— Howie

Criminal Defense Lawyers in Philadelphia, PA, Trusted With Every Kind of Case
Criminal defense lawyers in Philadelphia, PA, are known for taking on cases that demand real courtroom experience, and for treating every client's situation with the seriousness it deserves. At Brennan Law Offices, we've represented professionals, students, public servants, business owners, and everyone in between.
No Judgment. No Agenda. Just Your Defense.
Some of our clients have never faced a criminal charge before. Others are managing the weight of a serious felony or a case that's drawn public attention. Regardless of the circumstances, every case gets the same consideration from us: no judgment, no assumptions, and no agenda beyond your defense.
That includes clients facing difficult and sensitive charges, such as those accused of domestic violence, who need steady, clear-eyed representation just as much as anyone else. We also understand that a charge or an arrest doesn't tell the whole story, especially when your reputation, your freedom, and your future are at stake. We treat every case with that seriousness in mind, whether it's a first offense or a parole violation.
The Same Fight, No Matter Who's Watching
Some cases stay private. Others end up in the news. We've represented clients in matters serious enough to draw regional and national attention, including cases with political significance reaching all the way to the impeachment of a sitting president.
In moments like these, it can be tempting to let politics, public opinion, or personal beliefs shape a defense. We don't. Every client, regardless of who they are or what they're accused of, gets the same advocacy: sharp, relentless, and free of agenda.
This is what sets a Philadelphia criminal defense lawyer at Brennan Law Offices apart: not the size of the case, but the fight we bring to it, every time.
The Advocacy of the Philadelphia Lawyer, Beyond Philadelphia
Although we’re based in Philadelphia, our work doesn't stop at the city line, or the state line. At Brennan Law Offices, we represent clients throughout Pennsylvania and handle select matters in New Jersey and federal courts around the country, subject to applicable admission requirements.
, New Jersey, and, when federal charges are involved, anywhere in the country. That includes the greater Philadelphia suburbs and communities across the state, where the same commitment applies whether a case stays local or crosses into federal jurisdiction.
That reach is part of why the phrase "Philadelphia lawyer" carries weight far beyond geography. It's long been shorthand for an advocate who is sharp, tenacious, and unwilling to be outworked, a reputation that has nothing to do with where a case is filed and everything to do with how it's fought.
A Reach That Extends to the Nation's Highest Court
Federal cases in particular don't stay confined to one courtroom or one district. Attorney William Brennan is admitted to practice before the United States Supreme Court, a distinction that reflects the scope of his federal experience and the seriousness with which federal matters are handled at Brennan Law Offices.
Whether your case starts with a local investigation, a multi-state indictment, or charges filed in a federal court far from Pennsylvania, the same advocacy applies: understanding how the government builds its case, anticipating its next move, and pushing back at every stage.
Distance Doesn't Change the Support You Deserve
Working with a lawyer outside your immediate area shouldn't mean settling for less attention or less communication. Whether you're calling from across Pennsylvania, out of state, or somewhere else in the country entirely, you can expect the same responsiveness and the same directness from Brennan Law Offices that a client down the street would receive.
Facing federal charges doesn't require finding a lawyer near the courthouse. It requires finding the right lawyer, no matter where you happen to be.
No Matter Where You Live, You Need a Philadelphia Lawyer.
Frequently Asked Questions About Working With Criminal Defense Lawyers in Philadelphia, PA
Every criminal case is different, but a few questions come up again and again. Here are answers to some of the most common ones. If you don't see what you're looking for, reach out directly. We're glad to walk you through your specific situation.
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