Bar Admissions

Sheila is licensed to practice by the Bars of Virginia and Maryland.

Court Admissions

  • Supreme Court of Virginia

  • Court of Appeals of Maryland

  • U.S. Court of Appeals for the Fourth Circuit

  • U.S. District Court for the Eastern District of Virginia

Education

  • St. Lawrence University, B.A., summa cum laude, 1987

  • Georgetown University Law Center, J.D., cum laude, 1990

Volunteer Work and Leadership in the Legal Community and Beyond

  • Virginia Board of Bar Examiners Character and Fitness Committee

  • Virginia Women Attorneys Association (1994-2020)

  • Past president, VWAA (2007-2008)

  • Alexandria Bar Association

  • Fairfax Bar Association

  • Northern Virginia Swim League

  • Advertising Chair (2015-2019)

Sheila M. Costin

Sheila M. Costin brings her more than 35 of experience as a trial attorney in the federal and state courts of Virginia and Maryland to help her clients achieve their goals effectively and efficiently. Sheila also represents clients in business disputes, and advises clients on fiduciary duties.

Sheila represents clients involved in business litigation, where, for example, there are disputes over the dissolution of a business, non-competition agreements, theft of trade secrets, and breach of contract.   

Sheila has successfully represented administrators, executors, guardians, conservators, trustees and beneficiaries in litigation – including will contests; cases involving claims of wrongdoing against trustees, executors and conservators; and disputes among beneficiaries and heirs.  

Sheila was inducted into the Virginia Law Foundation as a Fellow in 2023. She has been recognized as one of Northern Virginia’s “Best Lawyers” and was recently included in Virginia Lawyers Weekly’s 2022 class of “Influential Women of Law.”