William J. Brennan

William J. Brennan

Brennan Law Offices • Philadelphia, PA
Criminal DefensePersonal Injury

Is this your profile?

Claim it for free to update your information and connect with clients.

Claim Profile →

Contact

Email
brennanlaw@philadelphiacriminallaw.com
Phone
(215) 568-1400
Address
Philadelphia, PA, 19103, US

Professional

Bar Admissions
Pennsylvania1987New Jersey1987U.S. District Court District of New Jersey1987U.S. District Court Eastern District of Pennsylvania1988U.S. Court of Appeals 3rd Circuit1988U.S. Supreme Court1991

About

William J. Brennan, a seasoned criminal defense attorney with 38 years of dedicated legal practice, serves as the principal attorney at Brennan Law Offices, located at 1600 Locust St., Philadelphia, PA. With an unwavering commitment to justice and an impressive track record, Mr. Brennan is highly regarded for his astute legal insight and formidable courtroom presence. His extensive experience in criminal defense has equipped him with the skills necessary to navigate the complexities of the legal system, ensuring that every client receives a robust and strategic defense. Mr. Brennan's legal expertise encompasses a broad spectrum of criminal matters, from misdemeanor offenses to complex felony charges. His comprehensive approach to criminal defense is marked by meticulous case preparation, rigorous investigation, and a deep understanding of the nuances of Pennsylvania's legal landscape. William believes in providing personalized legal counsel, taking the time to understand each client's unique circumstances and crafting tailored defense strategies that uphold their rights and interests. Clients of William J. Brennan benefit not only from his profound legal knowledge but also from his compassionate and client-focused approach. He is steadfast in his dedication to achieving the best possible outcomes, whether through skillful negotiation or tenacious litigation. As a pillar of the Philadelphia legal community, Mr. Brennan's commitment to ethical practice and client advocacy continues to make a significant impact, reinforcing his reputation as a trusted and formidable defender of justice.

About Criminal Defense Law

Criminal defense attorneys represent individuals accused of crimes, protecting their constitutional rights throughout the legal process. They work to achieve the best possible outcome through negotiation or trial. Common matters include dui/dwi, drug charges, assault, theft.

Credentials

Education
Temple University School of Law, Philadelphia, Pennsylvania, 1987 | J.D. | LaSalle University, 1982 | B.S.
Certifications
Certified capital murder defense attorney

Recognition & Involvement

Awards
Earned the highest rating (AV) for skill and integrity from Martindale‑Hubbell | Pennsylvania Super Lawyers by Law & Politics Magazine
Associations
Philadelphia Bar Association (Member) | Pennsylvania Bar Association (Member) | Federal Bar Association (Member) | American Bar Association (Member) | Pennsylvania Trial Lawyers Association (Member) | Pennsylvania Association of Criminal Defense Lawyers (Member)
Updated: Mar 10, 2026