Mamoun Mahayni


Mamoun Mahayni is an associate admitted to practice in the District of Columbia, Virginia, and Maryland, who works primarily with the Washington D.C. and Baltimore offices of Lewis Brisbois. Mamoun is a member of the firm’s general liability practice, through which he handles a wide variety of claims, including premises liability, automobile, and other personal injury matters. In addition, Mamoun’s litigation practice includes employment matters, contractual disputes, construction litigation, and professional liability claims. Prior to joining Lewis Brisbois, Mamoun worked for a law firm specializing in commercial and business disputes involving international real estate transactions, eminent domain proceedings, investor agreements, and business and regulatory compliance.

Foreign Language Capabilities



  • State Bar Admissions
    • District of Columbia
    • Maryland
    • Virginia
  • United States District Courts
    • United States District Court for the Eastern District of Virginia


Fairfax Bar Association


Case Western Reserve University School of Law

Juris Doctor, 2019

  • Emer de Vattel Scholarship Recipient

The University of Warwick

L.L.M Advanced Legal Studies, 2016

The American University of Beirut

Bachelor of Arts - Political Studies, 2014

  • Dean's Honor List Recipient

arrow Back to Attorneys