Markus/Moss PLLC

David Oscar Markus

David Oscar Markus is one of few lawyers that can do it all.  He actually tries cases and argues appeals all around the country. He teaches at the University of Miami School of Law and also to lawyers at legal education events.  He runs the well-known Southern District of Florida blog.  He also hosts a successful podcast, For the Defense.  And he frequently advocates for criminal justice reform in opinion pieces.

David is a magna cum laude graduate of Harvard Law School. He is known for his creative and unrelenting approach to cases, which leads to wins in trials and appeals. David focuses on high-stakes criminal litigation for both white collar and traditional criminal matters.  You can access his resume here. (PDF)

Best Lawyers named DBest Lawyeravid “Lawyer of the Year” for White Collar Criminal Law in 2020 and for General Criminal Defense in 2024, 2022, and 2017.  And the Dade County Bar Association awarded him the “Legal Luminary” award for criminal defense, an honor voted on by members of the legal community. In 2015, the National Law Journal selected him as one of the Trailblazers for White Collar Criminal Defense in the entire country.  Back when he was 29 years old (in 2002), the National Law Journal selected him as one of the top 40 litigators in the country under 40 years old, and it has recognized one of his federal trial victories as one of the top ten defense verdicts in the country that year.  He is also a fellow in the American College of Trial Lawyers.

David Markus walking into federal court with Mayor Andrew Gillum and his wife before the acquittal

In one trial victory, David not only beat all 141 counts in federal court for a doctor, but then won attorneys’ fees and costs of over $600,000 for his client in a first-of-its-kind victory. Based on that case, he was awarded the highest honor — the Rodney Thaxton “against all odds” award — by the Florida Association of Criminal Defense Lawyers. Although the 11th Circuit reversed the fee award in a number of controversial opinions, the court referred to Markus as an “elite” and “superb” attorney. (See page 9 of the opinion here). In another case, David challenged the way the federal court system in Miami selected jurors (alphabetically by last name) and won, which changed the jury selection process in the District (click here). After obtaining a fair jury, Markus’ client was found not guilty.  He never stops fighting for his clients.

David Oscar Markus leaving the Federal Courthouse in Miami after a hearing in which he represented Carnival Corporation.

Based on this type of creative and unique lawyering, in 2010, David was one of eight finalists in the country for best white-collar criminal lawyer in the country by Chambers & Partners, which quoted market sources saying that David is “the whole package,” and “a creative, courageous and tenacious courtroom advocate.” And he was named to that very prestigious short list of 8 best white-collar criminal defense lawyers again in 2011 (he was the only lawyer listed who was not from a large firm). The 2012 Chambers said this: “David Markus received strong praise from peers and clients alike, who describe him as ‘a legal genius and brilliant strategist with a great demeanor.'” A recent Chambers & Partners described David as a “wickedly smart and a terrific trial lawyer. … Clients say that he is ‘thrilling’ to watch in court and that ‘his passion appreciation and enjoyment for his work are contagious.” And in 2014, that publication identified David as “one of the best trial lawyers around: very smart, highly respected and thoroughly prepared.”  In 2016, Chambers said: “David Markus is one of the most talented criminal defense lawyers in Florida. He has a wealth of litigation experience and is regularly sought after for his counsel in high-stakes tax and criminal antitrust cases. Sources also describe him as an ‘extremely creative thinker and a great oral advocate’ who gets ‘tremendous results.'”  Chambers has also explained: “David Markus is amazing, not only because of the strength and genius of his arguments and motions, but also because of his brilliant and astonishing performances during the hearings. Additionally, he radiates so much confidence, and that in itself soothes the usual anguish and anxiety that you endure during these types of situations. Last but not least, he is such a great human being.” In 2020, that publication said that David “is an exceptional trial lawyer,” “an incredible oral advocate” and that “he’s pretty fearless in terms of dealing with the government.”

Since 2010, David has been listed as one of the top 100 lawyers in Miami and in all of Florida by SuperLawyers. He is one of the few criminal defense lawyers to received such an honor.   He is frequently named as one of the top lawyers in the Best Lawyers in America, South Florida Legal Guide, Florida Trend Magazine, Chambers & Partners, and the South Florida Business Journal. He was one of 20 lawyers named a key partner by the South Florida Business Journal in 2011 and again in 2012. The Daily Business Review named him a finalist for Most Effective Lawyer in Criminal Justice (one of three lawyers in Miami) in 2006, 2009, 2011, 2012, and 2015. He won the award in 2018. The district judges in the Southern District of Florida presented him with the Eugene Spellman Criminal Justice Act Award in 2013.

While at Harvard, David argued in front of Supreme Court Justice Anthony Kennedy who named him best oralist. (The argument, which was carried on C-Span, can be viewed here. David’s argument begins at 57:42). David was mentored by Alan Dershowitz while in law school (click here for a picture of them together at Harvard). After graduating from Harvard, David served as law clerk to the Honorable Edward B. Davis, then-Chief United States District Judge, Southern District of Florida. Following his clerkship, David worked as an associate at the leading criminal defense firm in the country, Williams & Connolly in Washington, D.C., and then practiced as an Assistant Federal Public Defender in Miami.

David Oscar Markus teaches future lawyers at Harvard Law School

David Oscar Markus teaches future lawyers at Harvard Law School

David is a past-president of the Florida Association of Criminal Defense Lawyers – Miami Chapter and past-president of the Federal Bar Association, South Florida Chapter, 2007-08. He served for ten years as the Southern District of Florida’s national representative for the Criminal Justice Act Panel, and is the vice-chair of the National Association of Criminal Defense Lawyer’s amicus committee. David also has co-authored the Fourth Amendment Forum, published in NACDL’s The Champion. He is frequently asked to serve on committees for the Southern District of Florida.

David frequently lectures on different aspects of the criminal trial and appeal. He currently teaches a White Collar Law seminar the the University of Miami School of Law and previously taught legal writing there. David also has taught Advanced Criminal Procedure and White Collar Law at Florida International University College of Law. He often speaks to other criminal defense lawyers on ethics and zealously representing criminal defendants charged with serious crimes. His lengthy list of lectures can be found on his resume.

David has also teamed with rakontur in the new podcast, For the Defense, which is about true criminal trial lawyers.  In the podcast, he interviews other well-known criminal defense lawyers about their most interesting trials.  You can listen to it here.


David speaking to criminal defense lawyers at NACDL’s annual conference about how to win “pill-mill” cases.

David is often quoted in publications around the country, including The Miami Herald, The Sun-Sentinel, The Palm Beach Post, the Daily Business Review, USA Today, The New York Times, The Wall Street Journal, The Boston Globe,, and He has written opinion pieces for numerous publications, and is the author of the popular Southern District of Florida blog, which has been described by the New Times as “the definitive source on South Florida’s federal court system.”  He recently wrote a chapter in a book for lawyers; his chapter was titled “Battling Goliath, Trying to Win in the Court of Appeals.”

David is a frequent opinion contributor, arguing for criminal justice reform and for individual rights.  He has written pieces in the Washington Post, USA Today, Miami Herald, New York Daily News, Newsmax, and others.  In this recent op-ed, co-authored with Mona Markus, he explains how the government frequently and unjustly prosecutes doctors.  In another, he argues that cameras should be permitted in federal courtrooms as a check on prosecutors and judges.

He is also a regular contributor for The Hill and other publications:

The Psychology of Persuading Jurors in the TikTok Era (with Kate Markus)
We Should Trust Juries
We Need Cameras in Trump’s Courtroom
Prosecutors Pursuing Alec Baldwin for all the Wrong Reasons
Many Cheat, but only Prosecutors get away with it
Judges: Be Kind and Remember Your Roots (with Kate Markus)
Dobbs will open the Floodgates to Litigation (with Nicole Markus)
The Foolishness of our Federal Criminal Code (with Kate Markus)
Senators, it’s time to add some 305 to the U.S. Supreme Court
Justice Department Wrong to Encourage Prosecutions it’s Fearful of Losing

Chauvin verdict: Don’t hate his lawyer
Social media is mightier than Gov. DeSantis’s guns
Bannon and Maxwell cases display DOJ press strategy chutzpah
Federal judge rightly upset over wrongful jailing of Michael Cohen
Cellphones haven’t stopped cops from lying — only courts can do that
Former prosecutors outraged at decision to dismiss the Flynn case should focus on the real problems
Lori Loughlin case should be dismissed if the prosecutors cheated
Let’s use Roger Stone’s case to fix our broken justice system
Michael Avenatti should not be in solitary confinement
We’re addicted to jail
Felicity Huffman’s 14-day sentence is unjust — because it’s too high
Justice Gorsuch channels his inner-Scalia, and that’s good for criminal defendants

Kim Kardashian is the hero that criminal justice reform needs
Federal prosecutors are trying to bully ‘Aunt Becky’ into pleading guilty
#MeToo has lost its way: In defense of Joe Biden
Barr and Rosenstein likely made correct legal decision on obstruction
Four years for Paul Manafort is the right sentence
A small next step for criminal justice reform: Fix good time credit
Paul Manafort should not be sentenced to 20 years in prison
OPR should investigate real prosecutorial misconduct, not Secretary of Labor Alex Acosta
Special counsel’s office wrong to arrest Roger Stone instead of letting him self-surrender
Absolutely nothing wrong with Manafort’s lawyers talking to Trump’s lawyers
Mueller should not get to decide whether Manafort is lying
Brett Kavanaugh would not have been treated fairly had he been a defendant
Should Kavanaugh be confirmed if we don’t know who is telling the truth
Five simple rules for judging Kavanaugh and his accusers
Kavanaugh won’t be charged

David is committed to zealously representing each and every one of his clients. He has built a reputation for winning the most difficult cases with creative strategies. David takes each case personally and does not like to lose.

You can email David Markus at

Attorney David Markus
  • J.D., magna cum laude, Harvard Law School, 1997
  • B.A., Emory University, 1994 (Phi Beta Kappa)
Bar Admissions
  • United States Supreme Court
  • State of Florida
  • Southern and Middle Districts of Florida
  • Eleventh Circuit Court of Appeals
  • Federal Court of Claims
  • admitted pro hac vice to various trial and appellate courts


  • Albert Krieger Award, Riverside House, 2022
  • Lawyer of the Year, General Criminal Defense, 2024, 2022 & 2017 (Best Lawyers)
  • Lawyer of the Year, White Collar Criminal Defense, 2020 (Best Lawyers)
  • Most Effective Criminal Lawyers, 2018 (Daily Business Review)
  • Trailblazer, White Collar Criminal Law, 2015 (National Law Journal)
  • Top 40 litigator under 40 years old, 2002 (National Law Journal)
  • Top Lawyer, White Collar Criminal Defense and non-White Collar Criminal Defense, 2007-present (Best Lawyers in America by U.S. News)
  • Listed as Most Influential Lawyers in Miami, 2012 (Poder Hispanic Magazine)
  • Band 1, Chambers & Partners, 2015-present
  • Top Miami Criminal Lawyer, 2002-present (South Florida Legal Guide)
  • Top 100 SuperLawyer in Miami, 2010-present (SuperLawyers)
  • South Florida Business Journal Key Partners Award, 2011, 2012
  • AV Rated (Martindale Hubbell)
  • Top Lawyer, 2007-present (Chambers & Partners)
  • Finalist, Best White Collar Attorney in the United States 2010, 2011 (Chambers & Partners)
  • Finalist, Most Effective Criminal Defense Lawyer, 2015, 2012, 2011, 2009, 2006 (Daily Business Review)