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Practice Areas
Education & Honors
  • The University of Chicago Law School, J.D., with highest honors, 1993; Order of the Coif; Articles Editor, The University of Chicago Law Review; Joseph Henry Beale Prize, 1991; D. Francis Bustin Prize, 1993; Isaiah N. Dorfman Prize, 1993
  • Wesleyan University, B.A., 1990
  • "AV-Rated" by Martindale-Hubbell®
Bar & Court Admissions
  • District of Columbia and Pennsylvania
  • Supreme Court of the United States
  • United States Courts of Appeals for the First, Second, Third, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth, District of Columbia, and Federal Circuits
  • United States District Courts for the District of Columbia, Maryland, Colorado, Northern District of Oklahoma, and Eastern District of Pennsylvania
  • United States Court of Federal Claims
  Craig D. Singer
TEL: 202-434-5964
FAX: 202-434-5029
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Williams & Connolly LLP
725 Twelfth Street, N.W.
Washington, D.C. 20005


Craig Singer concentrates his practice in three broad areas: professional liability, criminal defense, and appellate work.

Mr. Singer has represented numerous lawyers and law firms, including some of the nation’s largest firms, in federal and state courts, government investigations, and arbitration proceedings in many jurisdictions around the country, including New York, Pennsylvania, Illinois, Texas, Ohio, Oklahoma, Minnesota, Georgia and Kansas.  He has played a significant role in developing and litigating defenses to claims commonly brought against lawyers and law firms, including defenses based on in pari delicto, elements of aiding and abetting claims, attorney-client duties, proximate causation and damages.  Mr. Singer has particular experience in defending professionals and firms in matters arising from Ponzi schemes and other frauds.  He is the author of a book on that subject, Professionals, Firms, and Fraud:  Defending Professionals Against Liability For Client Fraud, which was published by the ABA in 2015.

Mr. Singer has extensive experience in federal criminal procedure, and is co-author of a treatise, Federal Criminal Discovery, published by the American Bar Association in August 2011.  As described by the ABA, Federal Criminal Discovery serves as an invaluable resource for judges, academics, prosecutors, and defense lawyers by providing an exhaustive discussion on the statutory and constitutional bases for discovery, and by covering the existing law fairly while examining both sides of the issues.”

In 2008-2009, Mr. Singer was a key player — and the principal brief writer — on the Williams & Connolly LLP team that defended the late U.S. Senator Ted Stevens against federal criminal charges in the District of Columbia.  Mr. Singer developed and argued many of the legal theories in that landmark case, which resulted in the government’s dismissal of all charges after disclosure of prosecutorial misconduct.  In his criminal defense practice, Mr. Singer has also represented individuals and entities in criminal cases or investigations relating to various alleged offenses including mail and wire fraud, RICO, antitrust, environmental crimes and securities fraud.

Mr. Singer’s appellate work is wide-ranging.  In the last several years, he has argued appeals in the U.S. Courts of Appeals for the Second and Eighth Circuits and in state appeals courts in Pennsylvania and Maryland.  He recently won an appeal he argued in the U.S. Court of Appeals for the Eighth Circuit on an issue of federal subject matter jurisdiction in a criminal case.  He has also represented a foreign state-owned oil and gas company in a federal appeal regarding an international injunction, and, in more general legal matters, represented a foreign government in mutual legal assistance treaty negotiations with the U.S. State Department and U.S. Department of Justice.  Mr. Singer has filed pro bono amicus briefs in the Supreme Court and other courts.  He commonly supervises Williams & Connolly associates in pro-bono appeals in the Maryland Court of Special Appeals.

Born in Washington, D.C., Mr. Singer grew up in suburban Philadelphia.  He earned his B.A. from Wesleyan University in 1990, taking off one semester to teach pre-school in Stamford, Connecticut.  Mr. Singer earned his J.D., with Highest Honors, from the University of Chicago Law School, where he was Articles Editor of The University of Chicago Law Review.  After law school, Mr. Singer clerked for Chief Judge Abner J. Mikva of the U.S. Court of Appeals for the District of Columbia Circuit and then Associate Justice John Paul Stevens of the U.S. Supreme Court.  He joined Williams & Connolly in 1996.

  • Co-author, Legal Advice or Business Advice? The Recent Case of Peterson v. Katten Muchin Rosenman LLP and Its Implications for Opinion Givers, 15 A.B.A. Bus. L. 1 (Fall 2015)
  • Co-author, Defending Malpractice Claims Against A Trustee Or Receiver (2015)
  • Professionals, Firms, and Fraud: Defending Professionals Against Liability For Client Fraud (2015)
  • When the Client Is a Fraud: Defending Professionals and Firms Following a Client’s Misconduct, A.B.A. Litigation Journal, vol. 42 (Fall 2015)
  • Co-author, The Supreme Court’s Omnicare Decision: Potential Implications for Litigation Concerning Closing Opinions, 14 A.B.A. Bus. L. 7 (Spring 2015)
  • Co-author, Defending the Corporate Deposition of the Law Firm: Selecting the Representative & Preserving Privileges, 24 Westlaw J. Prof. Liability 7 (Dec. 2014)
  • Co-author, The Opinion Is What the Opinion Says: Understanding So-Called “Duties of Disclosure” to Non-Clients, in In Our Opinion: Newsletter of the Legal Opinions Committee, 14 A.B.A. Bus. L. 14 (Fall 2014)
  • Co-author, Say What You Mean and Mean What You Say: How Explicit Language or Incorporation by Reference in Legal Opinions Can Affect Litigation Risk, in In Our Opinion: Newsletter of the Legal Opinions Committee, 13 A.B.A. Bus. L. 8, 9 (Summer 2014)
  • Co-author, Federal Criminal Discovery (2011)
  • Co-author, Mixed-Purpose Incentives in the Hospital-Physician Context, Nov. 1999 & Feb. 2000, Health Care Fraud & Abuse Newsletter
  • Medicare Anti-Kickback Act: A 'Meat Axe'?, Sept. 1999, Business Crimes Law Report
  • Conduct and Belief: Public Employees' First Amendment Rights to Free Expression and Political Affiliation, 59 U. Chi. L. Rev. 897 (1992)