Mark Latham
Mark D. Latham
Shareholder, New Orleans
President / Managing Partner
Hancock Whitney Center
701 Poydras Street
Suite 5000
New Orleans, Louisiana 70139


Mark is the firm's President / Managing Partner.  For over 30 years, Mark has helped companies involved in the petrochemical industry throughout Louisiana, southeast Texas and the surrounding region.  His maritime and state law practice includes:

  • Personal injury defense and property damage

  • Claims arising out of the drilling, production and refining of oil and gas

  • Tort claims involving construction and manufacturing facilities

  • Contractual indemnity and insurance coverage

  • OSHA investigations and defense

Mark's experience also includes defending companies in large complex toxic tort matters, including occupational diseases and asbestos claims.  He regularly advises clients in worker’s compensation matters and represents employers defending such claims under state law and the Longshore and Harbor Workers Compensation Act.  

A trained and experienced petroleum engineer, Mark also represents clients in various industries before the Occupational Safety & Health Administration. He helps clients solve problems and advises them during OSHA investigations and defends subsequent litigation brought by the Department of Labor.  For example:

  • A contractor client was facing a whistleblower complaint involving a refinery.  Mark led the response and helped keep the client focused on the allegation and relevant, technical issues.  Thanks to his quick response, guidance, preparation and management of the process, the client was not cited.

  • When a facility had a fire and explosion, two people were killed and 80 were injured.  Mark and his team got to the bottom of the real cause of the accident, proving that his client was not responsible and using the evidence to obtain summary judgment.

In his admiralty practice, Mark has practical, in-depth experience with insurance, offshore drilling practices, vessel collisions, drilling and completion accidents, well blowouts and reservoir damage. He has also handled pipeline accidents and other oilfield-related claims, vessel construction and repair litigation, and maritime finance and liens.



  • Louisiana Attorney Disciplinary Board, Hearing Committee Member, 2018 - present

  • Louisiana State Bar Association - House of Delegates, 2015 - present

  • International Association of Defense Counsel - Member

  • Defense Research Institute - Member

  • Louisiana Association of Defense Counsel - Member

  • New Orleans Bar Association Inn of Court - Member

  • New Orleans Bar Association, Young Lawyers Section - Vice-chair, 1997 - 1998 and Board Member

  • New Orleans and Louisiana State Bar Associations - Member

  • Southeastern Admiralty Law Institute – Member

  • Society of Petroleum Engineers - Member

  • VIA LINK - President, 2004 - 2006 and Board Member Emeritus

  • Dowell Schlumberger, Inc. - Field Engineer, 1985 - 1986


  • Jesuit High School - Tri-Chair for Parents Annual Giving Drive, 2003–2008

  • Holy Name of Jesus Parent-Teacher Association - President, 1998 - 1999 and Board Member

  • ViaLink – Board Member and Past Chair


  • The Best Lawyers in America, 2021-2022

  • New Orleans Magazine’s List of “Top Lawyers,” 2015-2017, 2019

  • Louisiana Super Lawyers, 2012–2020

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  • “Return to Work and Vocational Rehabilitation” (panel presentation) 2016 Loyola Annual Longshore Conference

  • “Update on Fifth, Ninth and Tenth Circuits” 2007 Southeastern Admiralty Law Institute

  • “Recent Developments in Maritime Law” 22nd New Orleans Fall Maritime Law Seminar Tulane University Law School, 2006

  • “Jurisdiction Revisited: Longshore Worker or Jones Act Seaman? What Constitutes a “Vessel” Under the Law?” 2005 Loyola Annual Longshore Conference

  • “What Do You Mean We Don’t Have Insurance Coverage? - Recognizing Coverage Problems in Advance,” 2004 Oilfield Indemnity and Insurance Seminar

  • “Theories of Liability – Traditional and Not So Traditional,” Toxic Tort Seminar, 2004

  • “Recent Developments in Maritime Law,” NOBA Mardi Gras CLE, 2003

  • “Recent Developments in Tort Reform,” Tort and Oilfield Update Seminar, 1999

  • “Environmental Exposures in the Oilfield and Allocating and Insuring Environmental Risks,” Oilfield Indemnity and Insurance Seminar, 1998


After Hours

Now that his children are grown, Mark spends his spare time reading, exercising, attending sporting events, and learning to fish the waters of southeast Louisiana.