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Ernest J. Marquart

Bank of America Plaza
101 E. Kennedy Boulevard
Suite 2800
Tampa, FL 33602


Mandy Desilles

Ernie Marquart's practice focuses on business litigation. He has extensive experience representing public and private companies, partnerships, and individuals in state and federal courts at both the trial and appellate levels. He also has represented clients before the American Arbitration Association, governmental agencies, and in administrative proceedings. Ernie has regularly represented clients in a variety of cases involving commercial contracts; construction projects; real estate, health care management, and franchise matters; securities and shareholder disputes; and transportation, environmental, and intellectual property issues. He also has substantial experience representing creditors in federal bankruptcy courts.

Ernie served on the firm's Management Committee from 2004 through 2011 and was the Managing Partner of the Tampa office from 2009 to 2011.  He was head of the Tampa office Litigation Department and co-chair of the Litigation Department firm-wide from 2001 to 2003 and was a member of the firm's Professional Development Committee from 1993 to 2000.


  • AV® Peer Review rated by Martindale-Hubbell
  • Best Lawyers in America, 2013, 2014, 2015, 2016, 2017
  • Florida Super Lawyer by Super Lawyers magazine, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
  • Top Lawyer by Tampa Bay Magazine

Professional and Community Affiliations

  • The Florida Bar, Business Law Section
  • The Hillsborough County Bar Association
  • The American Bar Association, Litigation Section and Tort Trial and Insurance Practice Section
  • Florida Bar Thirteenth Judicial Circuit Grievance Committee "A", 1997 -  2000; Vice-Chair, 2000
  • Academy of the Holy Names, Board of Trustees, 2016 - present
  • Leadership Tampa Alumni, Class of 2008
  • New Tampa Family YMCA, Board of Directors 2001 - 2007, 2009 - 2013; Chairman, 2003 - 2006
  • Florida Hospital Wesley Chapel Foundation, Board of Trustees, 2011 - 2013
  • Hillsborough County Consumer Protection Board, 2001 - 2005; Vice-Chair, 2002; Chairman, 2003 - 2005
  • Westover Homeowners Association, Board of Directors, 2003 - 2005
  • New Tampa Family YMCA, Youth Soccer and T-Ball Coach, 2002 - 2009
  • Temple Terrace Little League, Youth Baseball Coach, 2010 - 2013
  • Corpus Christi Catholic Church, Temple Terrace, Florida
  • The Tampa Club

News Releases

Alternate biographies



  • J.D., with honors, University of Florida, 1991
  • B.A., magna cum laude, Boston University, 1986

Bar and Court Admissions

  • Florida, 1991
  • United States Court of Appeals Eleventh Circuit
  • United States District Court Northern, Middle and Southern Districts of Florida



2017 MH AV

Best Lawyers