Thomas P. Mazzucco

Thomas P. Mazzucco

580 California Street
Suite 1100
San Francisco, CA 94104

Phone: 415.788.1900
Fax: 415.393.8087

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Primary Practice Areas

Civil Litigation

White Collar & Regulatory Defense


  • All courts in the State of California
  • Federal District Court for the State of California, Northern, Eastern, Southern and Central Districts
  • Ninth and Tenth Circuit Courts of Appeal


  • J.D., San Francisco Law School, 1988
  • B.A., Economics, University of California at Berkeley, 1982

Thomas P. Mazzucco


Mr. Mazzucco brings extensive courtroom and trial experience as counsel in white collar, internal fraud and federal grand jury matters to his practice. Mr. Mazzucco served as an Assistant United States Attorney for the Northern District of California for nine years (from 1999 – 2008) and as an Assistant District Attorney for the City and County of San Francisco for ten years (from 1990 – 1999). He specializes in white collar criminal defense, commercial, corporate and general litigation, claims involving fiduciaries and professionals, grand jury representation, internal corporate investigations and representations before the Securities and Exchange Commission.

Mr. Mazzucco was also selected as a Northern California Super Lawyer from 2013-2014.

Awards and Honors

  • Expert Guides recently published their White Collar Crime Expert edition in which Mr. Mazzucco was recognized as an expert in the field

Professional and Community Contributions

In May 2016, Mr. Mazzucco was sworn-in to his third term on the San Francisco Police Commission. Commissioner Mazzucco was nominated by Mayor Edwin Lee and was unanimously confirmed by the San Francisco Board of Supervisors to serve another term as a member of the San Francisco Police Commission. As a Police Commissioner, Mr. Mazzucco is responsible for setting policies and procedures for the San Francisco Police Department (SFPD), the Office of Citizen Complaints and the San Francisco Patrol Specials. Additionally, Mr. Mazzucco is responsible for conducting weekly public meetings and sitting in a quasi-judicial capacity in administrative disciplinary hearings. As a Police Commissioner, Commissioner Mazzucco has developed an expertise in the investigation and analysis of use of force incidents and policies.

Mr. Mazzucco is the Vice President of the San Francisco chapter of the Saint Thomas More Society.

Mr. Mazzucco is a former varsity football player at the University of California at Berkeley and is active in the "Sons of California" football alumni association. He also spends time working with current UC Berkeley football players about their career paths, specifically in law, politics and law enforcement.

Selected Presentations

  • Police Reform and Changing Police Culture - A Conversation With Leadership, Bar Association of San Francisco (BASF), Co-Presented with Norm Stamper, Suzy Loftus, William Scott, Malia Cohen, and Yolanda Jackson, May 15, 2017

Selected Publications

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