|Sheriff of the County of San Francisco (Acting)|
March 21, 2012  – October 9, 2012
|Preceded by||Ross Mirkarimi|
|Succeeded by||Ross Mirkarimi|
Vicki Hennessy was interim sheriff of San Francisco and was the city's first female sheriff. She was appointed interim sheriff by Mayor Ed Lee following Lee's suspension of elected sheriff Ross Mirkarimi for what Lee said was official misconduct. She is no relation to former Sheriff Mike Hennessey.
In December 1975, Hennessy joined the San Francisco Sheriff's Department, reached the rank of captain in 1983 (becoming the youngest in California), and became chief deputy sheriff in 1997. In 2006, she became the Deputy Director of the San Francisco Department of Emergency Services and Homeland Security, and from 2008 to 2011 she was San Francisco's Director of Emergency Management. She retired in 2011, but came out of retirement in 2012 to become interim sheriff following the suspension of Ross Mirkarimi.
- Schreiber, Dan (March 21, 2012). "New sheriff takes office; old sheriff officially suspended". SF Examiner. Retrieved March 23, 2012.
- Colliver, Victoria (March 21, 2012). "Vicki Hennessy to be 1st woman to serve as S.F. sheriff". San Francisco Chronicle. Retrieved March 23, 2012.
- "Mayor Lee Suspends Ross Mirkarimi & Appoints Law Enforcement Veteran Vicki Hennessy". Office of the Mayor. Retrieved March 23, 2012.