William Petrillo

In the high-stakes world of criminal defense, where reputations and freedom hang in the balance, William Petrillo stands as a formidable advocate. A founding partner at Sapone & Petrillo, LLP, in Mineola, New York, his journey to becoming a top-tier criminal defense attorney is marked by a diverse range of experiences and unwavering dedication to his clients.

Since joining the New York State Bar Association in 1995, Mr. Petrillo has focused his practice exclusively on criminal defense and white collar crimes, earning a reputation for taking on serious, difficult and complex cases in both state and federal courts. His track record speaks for itself, with numerous acquittals in high-profile trials that have garnered national and international attention.

Mr. Petrillo's passion for teaching has made him a sought-after lecturer, sharing his knowledge and insights with lawyers, law students, district attorneys and law enforcement entities. His journey began after graduating from St. John's University when he joined the New York City Police Department, gaining invaluable life experience as a police officer for six years. Driven by a desire to pursue law, he left the police force to attend the City University of New York School of Law. There, he excelled as a member of the trial advocacy team, earning the highest rating among participants in a national competition judged by lawyers and judges from across the country.

Upon graduating from law school in 1994, Mr. Petrillo's career in litigation took off as an assistant district attorney at the Nassau County District Attorney's Office. In 1998, he transitioned to private practice, joining a criminal defense firm where he solidified his position as the firm's in-house trial counsel. Over the next four years, he successfully navigated a diverse range of cases in multiple jurisdictions, from the most complex to the more minor ones.

Mr. Petrillo’s proficiency has made him a go-to legal expert for major television networks and newspapers, where he is frequently quoted and interviewed. His "Superb" rating on Avvo and selection to the National Trial Lawyers’ Top 100 Criminal Defense Trial Attorneys, the Nation’s Top One Percent Distinguished Counsel and Lawyers of Distinction further attest to his legal abilities.

Mr. Petrillo is frequently referred trial-ready cases by other attorneys and is routinely consulted by members of the legal community for guidance on trial strategy and issues of criminal law. He has also been retained by law firms as a consultant to assist their attorneys in complex matters. A sought-after lecturer, Mr. Petrillo regularly teaches lawyers, law students, district attorneys, and law enforcement entities. He resides on Long Island with his wife and two sons and devotes many hours to pro bono service. In addition, he is an ordained Christian pastor, preacher, and Bible teacher, spending significant time each week in ministry and seeking to serve others through his faith.