David John Feldman KC (Hon) FBA FRSA (/fɛldmən/) is a British legal academic, author and former judge.

He is Emeritus Rouse Ball Professor of English Law at the University of Cambridge,[3] and served as an international judge of the Constitutional Court of Bosnia and Herzegovina under the Dayton Agreement from 2002 to 2010.

[5] Feldman is an Emeritus Fellow of Downing College, Cambridge, an Honorary Bencher at Lincoln's Inn and an Academic Associate at 39 Essex Chambers.

[3] In 2000, he was appointed Professor of Law,[3] which he performed alongside his responsibilities as Legal Adviser to Parliamentary Joint Select Committee on Human Rights until 2004.

[3] He was President of the Society of Legal Scholars from 2010 to 2011,[6] and the outgoing Director of the Centre for Public Law at the University of Cambridge.

[3] Feldman retired as Rouse Ball Professor of English Law on 30 September 2018, and was succeeded by Louise Gullifer.

[3] He was Specialist Adviser to the Joint Select Committee on the Detention of Terrorist Suspects (Temporary Extension) Bills in 2011.

He was appointed Queen's Counsel honoris causa in 2008, "for his work in public law fields, particularly civil liberties and human rights".