Sophie Kletzien is an attorney in Holland & Knight's New York office and a member of the Litigation and Dispute Resolution Practice Group. Ms. Kletzien represents clients across a range of commercial litigation matters.

In addition, Ms. Kletzien is a member of the firm's Data Strategy, Security & Privacy Team and assists in the defense of businesses in putative class actions and individual lawsuits arising from data breaches involving ransomware and other data incidents. On the advisory side of her practice, Ms. Kletzien advises clients on federal and state privacy laws, including the Telephone Consumer Protection Act (TCPA), California Consumer Privacy Act (CCPA), Virginia Consumer Data Protection Act (CDPA) and Illinois Student Online Personal Protection Act (SOPPA). She also assists businesses with crisis management and data breach response protocols, revisions to privacy policies and other online disclosures, and compliance with industry security standards and frameworks. Ms. Kletzien is a Certified Information Privacy Professional in the United States (CIPP/US) with the International Association of Privacy Professionals (IAPP).

During law school, Ms. Kletzien worked as a federal judicial intern in the U.S. District Court for the Eastern District of New York, as well as a legal extern at the University of Pennsylvania Office of General Counsel. She served as a mediator in the Penn Law Mediation Clinic, where she handled cases involving personal injury, contract law and employment discrimination. She was also an associate editor of the University of Pennsylvania Journal of Constitutional Law, as well as the publicity chair of University of Pennsylvania's Asian Pacific American Law Students Association (APALSA).

Prior to attending law school, Ms. Kletzien served as a judicial intern in the Superior Court of New Jersey, as well as a legal intern in the Special Federal Litigation Division of the New York City Law Department.


  • University of Pennsylvania Law School, J.D.
  • The Wharton School, University of Pennsylvania, Certificate, Business Management
  • Rutgers University, B.A., summa cum laude
Bar Admissions/Licenses
  • New York
Court Admissions
  • U.S. District Court for the Eastern District of New York
  • U.S. District Court for the Southern District of New York