Marianna Knister Downer

Marianna Knister Downer


Gordon Arata Montgomery Barnett LLC

Recognized since 2026

New Orleans, Louisiana

Practice Areas

Commercial Litigation

Construction Law

Energy Law

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Marianna Knister Downer is a civil litigator and trial attorney representing clients in a wide range of industries including energy & environmental, construction, and administrative law. Her practice at Gordon Arata extends to complex litigation, appeals, civil procedure, commercial litigation, and risk management.

Marianna obtained both her Juris Doctor and Graduate Diploma in Comparative Law from the Paul M. Hebert Law Center at Louisiana State University. While at the Law Center, Marianna was a Senior Associate on the Journal of Energy Law and Resources, served for two years on the LSU Student Bar Association, and was a recipient of the John P. Laborde Endowed Scholarship. Marianna graduated from the Manship School of Mass Communication at Louisiana State University in 2012 with her B.A. in Mass Communication with a concentration in Political Communication. Prior to obtaining her law degree, Marianna spent four years in Washington, D.C. working both on and off Capitol Hill with former Senator Mary L. Landrieu.

Contact & Links
Location
  • 201 Saint Charles Avenue, 40th Floor
    New Orleans, LA 70170-4000
Education
  • Louisiana State University, J.D., graduated 2019
Bar Admissions
  • Louisiana, Louisiana State Bar Association, 2019

Recognized in Best Lawyers: Ones to Watch® in America 2026 for work in:
  • Commercial Litigation
  • Construction Law
  • Energy Law

Publications

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