Sophie Kletzien is an attorney in Holland & Knight's New York office and a member of the Data Strategy, Security & Privacy Practice Group. Ms. Kletzien handles a range of litigation matters with a focus on consumer class action defense involving data security and privacy claims. Her representative matters include defense of putative class actions relating to automated website data collection, wiretap claims and unfair business practices.

On the advisory side of her practice, Ms. Kletzien advises clients on federal, state and international data protection and privacy laws, including the Telephone Consumer Protection Act (TCPA), Video Privacy Protection Act (VPPA), European Union General Data Protection Regulation (GDPR), California Consumer Privacy Act (CCPA), California Privacy Rights Act (CPRA), Virginia Consumer Data Protection Act (CDPA) and Illinois Student Online Personal Protection Act (SOPPA). She also assists clients across many industries with data breach response protocols and crisis management, regulatory compliance, information governance strategy 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).

Ms. Kletzien also has experience in the fantasy sports, esports and gaming industries, where she advises businesses in connection with advertising, marketing and promotional services related to operations within those industries. She also advises clients in connection with the sale of state lottery products and related regulatory concerns.

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 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. Court of Appeals for the First Circuit
  • U.S. Court of Appeals for the Second Circuit
  • U.S. District Court for the Western District of Michigan
  • U.S. District Court for the Eastern District of New York
  • U.S. District Court for the Southern District of New York
Honors & Awards
  • Holland & Knight Pro Bono All-Star, 2021


Speaking Engagements