Dayna Underhill


2300 U.S. Bancorp Tower
111 S.W. Fifth Avenue
Portland, OR 97204

Dayna Underhill is a partner in Holland & Knight's Portland office, where she focuses her practice on complex commercial and employment litigation, as well as legal and government ethics and risk management for law firms, lawyers, corporate in-house counsel and political parties. She advises lawyers on all aspects of the law governing lawyers, including the defense of bar disciplinary complaints, obligations of lawyers as employers, lawyer mobility, lateral hiring, client engagement, conflicts of interest, attorney-client privilege, and law firm data privacy, breach and response.

Ms. Underhill has successfully represented companies and law firms in a broad range of disputes including breach of contract, unfair competition, trade secret violations, discrimination, leave laws, executive compensation and severance, and wage and hour. She acts as outside counsel to clients in a variety of industries providing ongoing business, risk management and employment advice and counsel.

Before joining Holland & Knight, Ms. Underhill worked at a national law firm concentrating on legal ethics and risk management for lawyers, as well as employment and complex business disputes. In previous roles, she also focused on plaintiff litigation matters involving employment, securities and complex commercial issues. Ms. Underhill began her career more than 25 years ago in the public defender's office. As a result of these multifaceted litigation experiences, she brings a well-rounded perspective to each client's matter.

Ms. Underhill is active in local and national legal associations. She is a frequent speaker on all aspects of the law governing lawyers. As an adjunct professor at Lewis & Clark Law School, Ms. Underhill taught trial practice and coached the law school mock trial team at the American College of Trial Lawyers National Competition for two consecutive years.

During law school, Ms. Underhill was on the editorial board and served as technical editor of the Suffolk Transnational Law Journal.


  • Suffolk University Law School, J.D.
  • Hartwick College, B.A. cum laude, Political Science

Bar Admissions

Oregon, Washington