Attorney Mark O'Brien

About Me

We are criminal defense attorneys. We do not handle personal injury cases or family law cases or business disputes. We represent the accused. We have physical offices in Tampa, Florida and Orlando, Florida but we practice throughout the State of Florida, in every county, big or small. We also defend those in need of our help all throughout the country. We have a track record of success. We have won jury trials, motions to suppress, motions to dismiss, direct appeals and post-conviction motions. We have represented professional athletes, Olympic athletes, entertainment figures, doctors, lawyers, accountants, members of our country’s armed forces, South American cartel members and first time offenders.Further, our cases have been profiled in major newspapers and television stations throughout the State of Florida and the United States of America, including The Washington Post, The Boston Globe, The San Francisco Chronicle, The Los Angeles Times, USA TODAY, The Miami Herald, The Tampa
I am Licensed to Practice in:
Floridasince 1998
Massachusettssince 1998
Middle District of Floridasince 2002
Northern District of Floridasince 2008
Southern District of Floridasince 2013
Western District of Texassince 2015
My Education
Siena CollegeBA - 1995
Delaware Law SchoolJD - 1998
My Memberships
The Academy of Florida Trial Lawyers
American Bar Association
National Association of Criminal Defense Lawyers
Florida Association of Criminal Defense Lawyers
The National Trial Lawyers

Lead Counsel Rating Details

This Attorney is Rated in the Following Practice Areas:
Criminal Law - Appellate in 2020
Criminal Law - Federal in 2020
Criminal Law - State Level Crimes in 2020
  • Verified Experience
  • Peer Recommended
  • Spotless Record