Dianne Emiel Feinstein (née Goldman; June 22, 1933 – September 29, 2023) was an American politician who served as a United States senator from California from 1992 until her death in 2023. A member of the Democratic Party, she served as mayor of San Francisco from 1978 to 1988.

A San Francisco native, Feinstein graduated from Stanford University in 1955. She was elected to the San Francisco Board of Supervisors in 1969 and immediately became the board's first female president upon her appointment in 1970. In 1978, during a third stint as the board's president, the assassinations of Mayor George Moscone and City Supervisor Harvey Milk drew national attention.