Robert C. Bonsib

The co-founder of MarcusBonsib, LLC, located in Greenbelt, Maryland, Robert C. Bonsib brings more than 45 years of legal experience including over 300 jury trials to a practice that involves a wide variety of criminal defense matters at both the trial and appellate level, including white collar crimes and high-profile state and federal cases. His specific areas of focus include DUI/DWI defense, drug possession, felony narcotics, assault and homicide, sexual offenses and financial crimes. Mr. Bonsib also assists clients who are under investigation by federal grand juries.

After receiving his Bachelor of Arts from Indiana University, Mr. Bonsib attended The Catholic University of America Columbus School of Law and was awarded his Juris Doctor in 1974. Prior to entering private practice in 1990, he was an assistant attorney with the Office of the State's Attorney in Prince George's County and then served as an assistant attorney with the United States Attorney's Office for the District of Maryland. Admitted to practice in Maryland and the District of Columbia, he is also admitted to practice before the U.S. District Court for the District of Maryland, the U.S. District Court for the District of Columbia, the U.S. Courts of Appeals for the 4th and District of Columbia Circuits, and the Supreme Court of the United States.

Mr. Bonsib has been recognized in each Top Lawyers edition of the Washingtonian Magazine since 2002.  He has been ranked  in the "Best Lawyers in American" in the practice areas of both white-collar and non-white collar criminal defense since 2006.   MarcusBonsib, LLC is ranked as a "Best Law Firm" by U.S. News & World Report/Best Lawyers.  He has been listed by "Super Lawyers" as a top lawyer since 2007 - and has been ranked as one the top 10 Maryland lawyers and one of the top 100 District of Columbia lawyers in 2019 and 2020.

Mr. Bonsib received the prestigious "Heeney Award" presented by the Maryland State Bar Association to an attorney who has exemplified a lifetime of excellence in the field of criminal law. 

Mr. Bonsib is a Fellow of the American College of Trial Lawyers.  He serves on the Maryland Criminal Pattern Jury Instructions Committee and is serving his 5th, four-year term on the Prince George's County Trial Courts Nominating Commission.  He has repeatedly been asked the United States District Court Judges to serve on its United States Magistrate Judge's Selection Committee and is a permanent member of the Judicial Conference for the United States Court of Appeals for the Fourth Circuit.

Highly regarded by his peers, Mr. Bonsib has received an AV Preeminent* rating from Martindale-Hubbell  as well as in The National Trial Lawyers: Top 100. A past president of the Criminal Law and Practice Section of the Maryland State Bar Association, he is an active participant in numerous professional organizations, including the Maryland Criminal Defense Attorneys' Association, the National Association of Criminal Defense Lawyers and the Prince George's County Bar Association.

Mr. Bonsib has presented continuing legal education seminars for the Judicial Institute of Maryland as well as numerous bar associations, prosecutors' offices, criminal defense associations and police organizations.   He regularly co-authors a criminal law article for the Prince George's County Bar Association NewsJournal.

*AV Preeminent and BV Distinguished are certification marks of Reed Elsevier Properties Inc., used in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell is the facilitator of a peer review rating process. Ratings reflect the confidential opinions of members of the bar and the judiciary. Martindale-Hubbell ratings fall into two categories: legal ability and general ethical standards.

**The Best Lawyers in America® 2010. Copyright 2009 by Woodward/White, Inc., Aiken, SC