Profile Image Placeholder

Mary Yu

Washington Supreme Court

Mary Yu was appointed to the Washington Supreme Court effective May 16, 2014, and subsequently elected for the remainder of a two-year term. Justice Yu joined the Supreme Court after more than 14 years as an accomplished trial court judge in King County Superior Court where she presided over a wide variety of criminal, civil, and juvenile cases, and presided over hundreds of adoptions and other family law matters. As a trial court judge, Justice Yu became known for treating everyone with respect and fairness, approaching each case with an open mind and understanding that each decision has an impact on an individual’s life.
Prior to becoming a judge, Justice Yu served as Deputy Chief of Staff to King County Prosecutor Norm Maleng and as a deputy in the Criminal and Civil Divisions. Before attending law school, Justice Yu worked in the Peace and Justice Office for the Archdiocese of Chicago first as staff, and later appointed by Cardinal Joseph Bernardin as Director of that Office.

Justice Yu has a deep record of service both on and off the bench, mentoring young attorneys, law clerks and students, co-chairing the Court’s Minority and Justice Commission, teaching at Seattle University School of Law and serving as Jurist in Residence, co-chairing the Washington State Bar Association/University of Washington Law School Leadership Institute, serving on the board of FareStart and the advisory board for the University of Washington School of Law’s Gates Public Service Program. She is personally devoted to the Civility Project of the Robert’s Fund Foundation and to the Seattle Girls’ School Mock Trials, serving as their judge for the last eleven years.

Justice Yu was raised in Bridgeport, a neighborhood in Chicago; her mother came from Mexico and her father from China. She received her B.A. from Dominican University, M.A., Religious Studies from Mundelein College of Loyola University in Chicago, and J.D. from the University of Notre Dame.

Professional Experience
Washington Supreme Court
- Current
King County Superior Court
Deputy Chief of Staff
King County Prosecutor Norm Maleng
Also, deputy in the Criminal and Civil Divisions.
Dominican College
Placeholder image for education.
Loyola University Chicago
M.A. | Religious Studies
Loyola University Chicago Logo
Notre Dame Law School
Notre Dame Law School Logo
"Woman of the Year"
Seattle University School of Law and Women's Law Caucus
“Judge of the Year”
Washington State Association for Justice
“Betty B. Fletcher Judge of the Year” Award
Washington Women Lawyers, King County Chapter
“Public Official of the Year”
Municipal League Foundation
Latina/o Amicus Award
Seattle University School of Law Latina/o Law Student Association
“President’s Award”
Asian Bar Association of Washington
“Difference Makers Award”
American Bar Association Solo, Small Firm and General Practice Division
“Judge of the Year”
Washington State Bar Association
(shared with Justice Gonzalez)
Websites & Blogs
Washington Supreme Court
Court biography
Contact & Map
Mailing address
PO Box 40929
Olympia, WA 98504-0929
Washington State Supreme Court
415 12th Ave. SW
Olympia, WA 98501-2314
Telephone: (360) 357-2033