Megan T. Mantzavinos is a partner with MOODK’s Maryland and Delaware offices, and serves as the Managing Partner of the Maryland office.  She is admitted to practice in Delaware and Maryland.  Megan is also a member of the Delaware Bar Association and served as a past Chair of its Women and Law Section.

Megan graduated from the University of Delaware in 1993, with a Bachelor of Arts in Philosophy. Later, she attended Widener University School of Law as an Evening Division student, graduating in 1998.  During law school, she worked full-time as a paralegal in the Delaware office of a Philadelphia-based insurance defense firm.

Since joining Marks O’Neill in 1999, Megan has focused her practice on employment and local government matters, including civil rights and land use litigation, as well as appellate advocacy.  She has extensive experience in litigating cases in the Delaware Courts, and has argued before the United States Court of Appeals for the Third Circuit, Delaware Supreme Court, and Maryland Court of Special Appeals.

Megan T. Mantzavinos
Partner / Maryland / Delaware

Phone 667-206-5320

Megan T. Mantzavinos PDF


  • J.D., Widener University School of Law, 1998
  • B.A., University of Delaware, 1993

Bar Admissions

  • Delaware, 1999
  • U.S. District Court for the District of Delaware, 2000
  • U.S. Court of Appeals for the Third Circuit, 2003
  • Maryland, 2005
  • U.S. District Court for the District of Maryland, 2005
  • U.S. Court of Appeals for the Fourth Circuit, 2005

Bar Associations

  • American Bar Association
  • Delaware Bar Association, Women and the Law Section
  • Maryland Bar Association

Practice Areas

  • Bankruptcy, Appellate Advocacy, Post-Trial Practice
  • Employment Law, Municipal & Public Entity
  • Professional Liability
  • Toxic Tort, Mass Tort, Environmental and Products Liability

Representative Cases



600 Baltimore Avenue, Suite 305, Towson, MD 21204

300 Delaware Avenue, Suite 900, Wilmington, DE 19801