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About Arnie

Arnold R. Rosenfeld (Arnie) is a distinguished Boston lawyer who has had significant experience and success in zealously representing clients in a wide variety of bar discipline, civil, and criminal cases in the federal and state courts as well as before administrative agencies for over fifty years as a member of the Massachusetts bar. 

Arnie now focuses much of his practice on advising and representing lawyers and law firms on legal ethical matters, including bar disciplinary proceedings, legal malpractice cases, as an expert witness on the Rules of Professional Conduct, and providing general ethical advice to lawyers and law firms. Over the course of his career, he has represented literally hundreds of clients in bar discipline matters before the Massachusetts Board of Bar Overseers.

He has also been the lead attorney in over 40 criminal and civil jury trials in the state superior court and in federal district courts in Massachusetts and the District of Columbia as well as in over twenty-five appellate cases in the Massachusetts Supreme Judicial Court and the First Circuit Court of Appeals. 

Arnie’s legal career spans both the public and private sectors, including leading roles such as the Chief Bar Counsel for the Board of Bar Overseers for the Commonwealth of Massachusetts, the first Chief Counsel of the Committee for Public Counsel Services (the State Public Defender), the Chair of the American Bar Association Standing Committee on Professional Discipline, and practicing with the Boston offices of highly distinguished local and national law firms. 

As a recognized expert in ethics and professional responsibility, Arnie has been teaching Professional Responsibility at Northeastern University School of Law, where he is an Adjunct Professor of Law, since 1995.  He also taught for over 20 years at Boston University Law School, where he was a Visiting Professor of Law, and for three years at Suffolk University Law School. He has written extensively on a variety of ethical issues.
Prior to practicing law, Arnie served on active duty as an infantry officer in the U.S. Army and was honorably discharged as a Captain in the U.S. Army Reserve.

Industry Recognition 

Arnie often has been recognized for his distinguished career and expertise. 
He has been selected as one of the Best Lawyers in America and Massachusetts Super Lawyers since 2006. Arnie has been the recipient of many honors including being selected as the Wasserstein Public Service Fellow in Residence at Harvard Law School, the Thomas More Award from Boston College Law School for his distinguished career, and the Thurgood Marshall Award for his services to the indigent from the Massachusetts Committee for Public Counsel Services. He also is an elected member of the American Law Institute. 


    Boston College Law School, J.D.

  Bowdoin College, A.B. 


  Commonwealth of Massachusetts

  U.S. District Court, District of Massachusetts 

United States Court of Appeals for the First Circuit

  United States Supreme Court

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