725 Twelfth Street, NW
Washington, DC 20005

+1 202 434 5487

Local Litigation Star

Top 250 Women in Litigation

Practice area:

White collar crime

Katherine Turner focuses her practice on complex civil litigation and government and internal investigations.  She has represented corporations, professional firms, and individuals in a range of federal and state cases, at both the trial and appellate levels, and in arbitration before AAA, JAMS, and FINRA. Katherine serves as Co-Chair of the firm’s Accountant Liability practice group. She has extensive experience in defending accounting firms in professional liability and regulatory matters, including work for three of the Big Four firms and a prominent national accounting firm.

Katherine also has significant experience in representing clients in congressional investigations, including representation of Secretary Hillary Rodham Clinton before the House Select Committee on Benghazi. In litigation matters, her practice has encompassed cases in several substantive areas, including securities litigation and commercial contract disputes.

Benchmark Litigation
has recognized Katherine as a “Litigation Star” in the areas of commercial litigation and white collar criminal defense, 2017-2021, and among the “Top 250 Women in Litigation” for the last six years. 

Katherine was born and raised near Philadelphia, Pennsylvania and graduated from Georgetown University, summa cum laude, in 2001. She received her J.D., cum laude, from the Harvard Law School, where she was an editor of the Harvard Law Review. She joined Williams & Connolly in 2005, after serving as a law clerk to the Honorable Bruce Marshall Selya of the United States Court of Appeals for the First Circuit. Katherine is a Co-Chair of the firm’s Women’s Initiative and the Chair of the firm’s Intake Committee.


Updated Oct 2021