MacDonald Rudy

Welcome to MacDonald Rudy, a highly regarded law firm based in Downtown Honolulu with a team of attorneys, with over 30 years of experience, that represent both plaintiffs and defendants in trust and estate litigation, family and closely held company litigation, maritime litigation, and other practice areas.
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Serving Hawaii Since 1992

Our clients include individuals, local business owners and large mainland companies with interest in Hawaii. Our areas of particular expertise include trust and estate litigation, family and closely held company litigation, admiralty and maritime issues and litigation, and insurance law. We represent each lawsuit individually and invest our very best minds in every case we take on. Your legal success is our number one priority.

Our Mission

Our motto is to provide personalized services, addressing each client’s individual needs and circumstances and tailoring our representation to fit the scale of the dispute. When structuring agreements, we take into consideration our clients’ objectives and financial situation, with the aim of providing the highest quality representation possible.

Firm Overview


MacDonald Rudy is a leading law firm in Honolulu that specializes in a wide range of litigation, including trust and estate litigation, family and closely held company litigation, admiralty and maritime litigation, as well as other civil suits.

Michael D. Rudy founded the firm in 1992 as a general commercial practice. In 1998, Stephen B. MacDonald joined the firm as senior partner in the litigation department. Ralph J. O’Neill and Robert M. Yamauchi joined soon after as partners, and the firm has continued to expand.
Senior partners of Micheal Rudy at MacDonald Rudy's Law Firm

All of our senior partners have more than 30 years of experience in Hawaii, and we represent both plaintiffs and defendants in federal and the state court of Hawaii. Our clients range from individuals to local businesses to large mainland firms.

We’ve made a point to invest heavily in technology to enhance our practice, integrating Westlaw, litigation databases, Electronically Stored Information applications, video conferencing and other tools to handle some of the most complex cases in Hawaii.

Our Team


With more than 30 years of experience serving clients nationwide, our team is dedicated to help our clients and our local community. 

MICHAEL D. RUDY
Founding Partner

RALPH J. O'NEILL
Partner

ROBERT M. YAMAUCHI
Partner

PAUL A. C. HIGA
Partner

MATTHEW A. HEMME
Partner

CHERYL R. NG
Associate

CHRISTIN D. W. KAWADA
Associate

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