John Duff | Civil Law | Texas Trial Attorneys | HMG LLP

John C. Duff

John C. Duff earned his law degree from St. Mary’s University School of Law in San Antonio, Texas, after graduating Presidential Scholar from Texas A&M University-Commerce. While pursuing his Juris Doctorate Degree, John was involved in St. Mary’s School of Law’s External Mock Trial Advocacy Program. John received numerous awards for his trial advocacy skills including Best Defense Advocate at the Capital City Challenge in Washington D.C. 

John was also the leader of the team that brought St. Mary’s its first national championship from the William Daniel National Invitational Mock Trial Competition in Atlanta, Georgia. For his relentless dedication and performance on the St. Mary’s Mock Trial team, John was inducted into the Order of the Barristers National Honor Society in April of 2016.

While earning his Juris Doctorate degree and competing for the St. Mary’s Mock Trial team, John also gained extensive real-world practice experience clerking for three criminal defense attorneys in San Antonio specializing in federal criminal law and juvenile law.

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Bar and Court Admissions

  • Texas 2017


  • St. Mary’s School of Law, San Antonio (J.D. 2016)
  • Texas A&M University-Commerce (B.A. Political Science)

Professional Associations, Accolades & Publications 

  • Corpus Christi Bar Association
  • State Bar of Texas
  • Texas Young Lawyers Associati
  • The National Order of the Barristers
  • American Association for Justice
  • Understanding & Preventing Cyberbullying, Co-Author with Kevin Collins and Sam Morales, San Antonio Lawyer March-April 2017

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