Judge Mary E. Wiss | Trellis: Legal Intelligence + Judicial Analytics

The Honorable Mary E. Wiss

San Francisco Superior Court, Department 305 (website)

Court Info

San Francisco Superior Court, Department 305 (website)

Clerk phone: +1 (415) 551-3732

Court Reporter: +1 (415) 551-5940

Bailiff: +1 (415) 551-3734


The Hon. Mary E. Wiss is a judge for the Superior Court of San Francisco County in California. She was appointed by former governor Gray Davis on May 7, 2001, filling a vacancy created by the elevation of Judge Laurence Kay to the Court of Appeal.

Wiss attended the University of San Francisco, where she earned a B.A. in 1972 and a J.D. in 1980.

Wiss began her legal career working as a partner with Baum, Wiss & Blake in 1981. She left the firm and started her own private practice in 1993. Throughout her career as a lawyer, Wiss has specialized in tort litigation, handling personal injury, wrongful death, product liability, and medical negligence cases. She has also worked as a mediator with the American Arbitration Association, a position she held until her appointment to the bench in 2001.

Wiss has served as president of the California Judges Association (2009), the San Francisco Trial Lawyers Association (1997), the Lawyers’ Club of San Francisco (1994), and the Queen’s Bench of the Greater Bay Area (1988).

She has also been a member of the Judicial Council of California as well as the Consumer Attorneys of California.

Wiss is the first female judge to serve in the Complex Litigation Department of the Superior Court of San Francisco County.

She has been described as a defense-oriented judge, someone who treats rudeness harshly.


J.D. from University of San Francisco (1980)

B.A. from University of San Francisco (1972)


Partner at Baum, Wiss & Blake in San Francisco County, California (1981 to 1993)

Sole Practitioner at Private Practice in San Francisco County, California (1993 to 2001)

Mediator at American Arbitration Association (1996 to 2001)

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