We use cookies to deliver our online services. Details of the cookies we use and instructions on how to disable them are set out in our Cookies Policy. By using this website you agree to our use of cookies. To close this message click close.

Mark W. Brennan

Washington, D.C.

Mark W. Brennan

Clients across industry sectors seek Mark Brennan's practical advice on cutting-edge communications and privacy issues. An experienced advisor, Mark is as comfortable assisting clients on FCC and FTC policy and enforcement as he is providing actionable compliance strategies to operations teams. He receives dozens of requests each year to share his insights on consumer protection issues at industry conferences and is most well-known for obtaining significant victories for clients on Telephone Consumer Protection Act (TCPA) issues.

Mark's clients include leading online and e-commerce companies, wireless carriers, global telecommunications providers, "Internet of Things" pioneers and app developers, and other technology vendors, as well as a diverse set of international clients from the transportation, financial services, education, and healthcare sectors.

In addition to his TCPA and telemarketing experience, Mark helps clients on other privacy and data security matters, including Section 5 of the Federal Trade Commission Act, the FCC's Customer Proprietary Network Information (CPNI) rules, CAN-SPAM, the Video Privacy Protection Act, the Children's Online Privacy Protection Act (COPPA), state data breach statutes, and more. He also regularly counsels clients on issues relating to mobile marketing, location-based services, and online behavioral advertising.

An intern at the FCC when Janet Jackson's wardrobe became front-page news, now Mark's international telecommunications practice encompasses licensing and regulatory requirements, transaction approvals, and consumer protection issues. He counsels clients on a variety of communications and spectrum policy issues, including FCC auctions, net neutrality, equipment authorization, IP transition, and E-911.

Education and admissions


  • J.D., Georgetown University Law Center, 2005
  • B.S., summa cum laude, University of Florida, 2002


  • Board Member, Sitar Arts Center
  • Board Member, Washington Area Lawyers for the Arts
  • Co-chair, Mobile Payments Committee, Federal Communications Bar Association
  • Member, International Association of Privacy Professionals
  • Past Board Member, National LGBT Bar Association
  • Past Chair, Charity Auction Committee, Federal Communications Bar Association
  • Past Co-chair, Social Media, Membership & Marketing Committee, Federal Communications Bar Association
  • Past Co-chair, Transactional Practice Committee, Federal Communications Bar Association
  • Past Co-chair, Young Lawyers Committee, Federal Communications Bar Association
  • Past Executive Committee Member, Federal Communications Bar Association

Bar admissions and qualifications

  • District of Columbia
  • Florida

Court admissions

  • U.S. Supreme Court


Rising Star, Communications

Washington, D.C. Super Lawyers


Media, Technology and Telecoms - Telecoms and Broadcast: Regulatory, 2010-2014, Media, Technology and Telecoms - Telecoms and Broadcast: Transactional, 2014

Legal 500 US


Best Lawyers Under 40

The National LGBT Bar Association

Loading data