Meet MAry

About Mary

Mary Knox has dedicated her life to making Contra Costa County safer. For more than 37 years, Mary has served as an experienced prosecutor and advocate for crime victims. As a lead prosecutor in the District Attorney’s office, Mary has won high profile cases against some of the most notorious criminals in Contra Costa County history. She worked to dismantle the criminal gangs who have preyed upon our most disadvantaged communities, and she has engaged in meaningful violence reduction by instituting effective strategies to reduce crime and prosecute violent criminals. To discourage freeway shootings, she secured $3.5 million for freeway security cameras. She brought in $3.5 million in federal funding to combat sex trafficking. And, after recent smash and grab robberies, Mary developed a three-point plan to hold organized crime syndicates accountable and prevent future crimes.

Mary understands that we don’t have to choose between advancing social justice and reducing crime. She led the effort to end discrimination against women in the Contra Costa County’s District Attorney’s office. She won a $3 million grant for the Youth Justice Initiative to keep our children in school. And, she serves as the President of “Get VOCAL for Victims,” a nonprofit organization providing legal representation to crime victims, as well as on the Advisory Board of Pillars of Hope which protects victims of human trafficking. Mary brings strong management skills to the table, and she will recruit experienced prosecutors – while holding the office to a high standard of professionalism and integrity.  Mary will stand up for justice, fairness, and police accountability in our communities.

Born and raised in Walnut Creek, Mary was in the first freshman class at Northgate High School. She went to college at UCLA and then Pepperdine Law School. During law school, Mary worked as a law clerk in the Los Angeles County District Attorney’s Office in the Sexual Assault Unit and in a second clerkship in the Juvenile Unit. Once Mary graduated from law school, she came home and has worked as a prosecutor in the Contra Costa County District Attorney’s for the past 37 years while raising her son, Darien, as a single mother.



“People in our community have had enough. They are alarmed by rising break-ins and robberies and the loss of a sense of safety in our neighborhoods. Mary Knox brings a proven track record of addressing crime and she is the only candidate supported by our sheriff, deputy sheriffs, and local police officers. We need an experienced leader as our District Attorney. That’s why I’m supporting Mary Knox.”

Paid for by Mary Knox for Contra Costa District Attorney 2022
FPPC# 1439290

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