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U.S. Supreme Court

U.S. Courts of Appeals for the Fifth and Ninth Circuits

U.S. District Court for the Southern, Northern, Eastern, and Western Districts of Texas

Mark Parenti

Mark Parenti is a trial and appellate lawyer, representing local and international clients in complex state and federal civil litigation, as well as federal criminal cases and appeals.


As a criminal defense attorney, he has represented individuals charged with offenses ranging from capital crimes to misdemeanors before federal trial courts, the U.S. Courts of Appeals for the Fifth and Ninth Circuits, and the U.S. Supreme Court.

He has extensive experience in government service. Previously, he worked as Deputy Counsel for the Texas Health and Human Services Commission's Office of Inspector General, where he provided legal advice to auditors, investigators, and enforcement attorneys, and evaluated multi-million dollar cases for settlement and enforcement proceedings. As a Senior Staff Attorney in the Office of General Counsel for the Texas A&M University System, he advised university officials on health care law, contracts, and personnel issues. During his time there, he initiated and advised system-wide task forces on the implementation of health care privacy and bio-terrorism regulations. Prior to that, he served as a Texas Assistant Attorney General in the General Litigation and Transportation sections, where he represented a variety of state agencies and universities in all phases of state and federal litigation, including appeals.

Mr. Parenti started his legal career as an associate working for the national labor and employment firm of Littler Mendelson P.C. in Houston.


Mr. Parenti received his J.D. in 1996 from the University of Maryland School of Law, where he served as Articles Editor of the Maryland Law Review. After graduation, he clerked for two years for the Honorable Melinda Harmon on the U.S. District Court for the Southern District of Texas in Houston.


Mr. Parenti received a Masters in Public Administration in 2003 from Texas A&M University's Bush School of Government and Public Service, where he was a George H.W. Bush Fellow. He studied the classics at St. John's College in Annapolis, Maryland, graduating with a Masters degree in 1992. He graduated from the University of Maryland with a Bachelors of Arts in Political Science in 1990. 


Mr. Parenti serves as President of the St. John's College Alumni Association and a member of the St. John’s College Board of Visitors and Governors.  He has served as a leader of the Association's Houston Chapter and received the 2016 Alumni Volunteer Service Award. Mr. Parenti served as a member of the board of directors of the Italian Cultural and Community Center of Houston from 2017 to 2019.