Zachary M. DiIonno

Alston Hunt Floyd & Ing Lawyers


Oahu (Honolulu) 1001 Bishop Street, Suite 1800
Honolulu, HI 96813

About Zach

The relentless pursuit of excellent results and client satisfaction drives Zach DiIonno’s law practice. He concentrates his practice primarily in the areas of business disputes, commercial litigation, construction litigation, employment and labor law, non-profit law, civil rights, and class actions. His legal acumen focuses on finding practical, cost-effective solutions for any complex legal issue. Zach has experience in all phases of litigation, allowing him to handle everything from pre-litigation investigation to drafting complaints and responsive pleadings to all phases of discovery to drafting both procedural and substantive motions.

Prior to joining AHFI, Zach served as a law clerk for the Honorable Richard W. Pollack at the Hawai`i Supreme Court and a clerk extern for Hawai`i Supreme Court Associate Justice Sabrina McKenna where he assisted with cases ranging from issues relating to marital estates, criminal law, and constitutional right to privacy in disclosing protected health information. His experience as a summer law extern at the Hawai`i Appleseed Center for Law and Economic Justice strengthened Zach’s commitment to public interest cases to serve the marginalized members of our community, which led to his current involvement in several of the firm’s complex civil right class action suits.

Zach’s civic leadership experience is deeply rooted in Hawaii’s community. He helped to co-found the not-for-profit Parents for Public Schools Hawai`i, to promote parent involvement in policy and legislative initiatives relating to Hawai`i’s public school system, and he also served as vice chairman and treasurer of the Manoa Neighborhood Board. Prior to law school, DiIonno served as a middle school special education inclusion teacher at Ilima Intermediate in Ewa Beach through Teach For America, and in 2010, he was selected by TFA as a Political Advocacy & Leadership Initiative Fellow to work for the Center for American Progress, a public policy and advocacy organization based in Washington, D.C. He continues to be involved in numerous endeavors relating to public education reform in Hawai`i.

DiIonno earned his J.D. and Native Hawaiian Law Certificate from the William S. Richardson School of Law, where he was President of the Advocates for Public Interest Law (APIL) and served as a member of the Native American Moot Court team (NAMC), during which time he received a number of accolades for his oral advocacy and legal writing. He holds a Master of Education from the University of Hawai`i, and a B.A. in Political Science from Johns Hopkins University.

Practice Areas

Other Areas

Additional Information

Admitted to Practice
  • Hawai`i
  • U.S. District Court for the District of Hawai`i
  • Hawaii State Bar Association
    • Appellate Section
  • Parents for Public Schools Hawai`i
    • Co-founder and Board member
  • Manoa Neighborhood Board, District 7 (2011-2012)
    • Vice Chairman and Treasurer
  • William S. Richardson School of Law (J.D., 2013)
    • Native Hawaiian Law Certificate
    • Advocates for Public Interest Law (APIL) Student Board President (2011-2012)
    • 2013 National Native American Law Student Association Moot Court Competition, Best Brief
    • Asian-Pacific Law & Policy Journal, Editor (2011-2012
    • CALI, Excellence for the Future Awards, Highest Grade, Native Hawaiian Rights (Fall 2012)
    • CALI, Excellence for the Future Awards, Highest Grade, Legal Writing (Fall 2010, Spring 2011)
  • University of Hawai`i, College of Social Studies (Public Policy Certificate program, ongoing)
  • University of Hawai`i (Master of Education, Special Education, 2009)
  • Johns Hopkins University (B.A., Political Science, 2006)
Past Positions
  • The Honorable Richard W. Pollack, Hawai`i Supreme Court
    • Law clerk (2013-2014)
  • The Honorable Sabrina McKenna, Hawai`i Supreme Court
    • Clerk Extern (2012)
  • Hawai`i Appleseed Center for Law & Economic Justice
    • Summer extern (2012)
  • Senator Jill Tokuda, Hawai`i State Legislature
    • Legal extern (2012)
  • McCorriston Mukai Miller MacKinnon LLC
    • Summer associate (2011)