Markus/Moss PLLC
  • Wickedly smart and a terrific trial lawyer....Clients say that Markus is ‘thrilling’ to watch in court and that ‘his passion, appreciation, and enjoyment for his work are contagious.’

  • One of the 16 “most influential lawyers in Miami.”



Markus/Moss is a nationally-recognized trial and appellate boutique law firm known for taking on and winning difficult criminal defense cases. The Firm’s lawyers are tenacious courtroom advocates who accept only a small number of high-stakes cases at any given time so that they can dedicate their full attention to every client. The Firm’s founder, David Oscar Markus, is a Harvard-educated lawyer who has been described as “wickedly smart and a terrific trial lawyer.” His clients say that he is “the whole package” and “a creative, courageous and tenacious courtroom advocate.”

The Firm handles a wide variety of criminal defense matters, with an emphasis in representing businessmen and professionals in federal white-collar prosecutions and appeals.  Markus/Moss also has been widely recognized for its successful and creative work in state and federal courts on drug and other non-white collar cases. Although many of the Firm’s cases are private and resolved without charges ever being brought, this website will give you a small sample of some of the public cases that the Firm has handled.  To learn more, please click here.


Recent News
  • It was a summer of victories.  A trial not guilty, an appellate win, and a huge sentencing reduction.  Read more here.
  • The 2015 Super Lawyers again named David Markus as one of best 100 lawyers in all of Florida and the National Law Journal named him one of the 2015 “Trailblazers” in the entire country for White Collar Criminal Defense.
  • Margot Moss was elected as an officer of Legal Services of Greater Miami.
Highlights of the Firm’s Founder

Here are some of the many accolades received by the Firm and its founder, David Oscar Markus:

  • One of eight finalists in the country for best white-collar criminal lawyer in the country by Chambers & Partners in back-to-back years.
  • Top Lawyer, White Collar Criminal Defense and non-White Collar Criminal Defense, Best Lawyers in America by U.S. News (2007-present)
  • Magna cum laude from Harvard Law School

Learn more about David Oscar Markus.


David Oscar Markus hosts the popular Southern District of Florida blog, which provides news and notes regarding federal practice in the Southern District of Florida.


This is big news. The nomination comes out of Alabama to fill Judge Dubina's seat. This would be >>
Thu, Feb 11, 2016