Marianna Knister Downer

Marianna Knister Downer

recognized lawyers icon Recognized in Ones to Watch since 2026
Awarded Practice Areas
Commercial Litigation Construction Law Energy Law
Awarded Practice Areas
Commercial Litigation Construction Law Energy Law
Works at
Gordon Arata

27 Best Lawyers awards

Gordon Arata logo

Biography

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.

Works at
Gordon Arata

27 Best Lawyers awards

Gordon Arata logo

Locations

Education

  • Louisiana State University, J.D., graduated 2019

Bar Admissions

  • Louisiana, Louisiana State Bar Association, 2019

Client Testimonials

Awards & Focus

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

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