Karen Lorraine Jacqueline Speier (/spɪər/; born May 14, 1950) is an American politician who currently serves as a U.S. Representative for California’s 14th congressional district, serving in Congress since 2008. She is a member of the Democratic Party. The district, numbered as the 12th District from 2008 to 2013, includes the northern two-thirds of San Mateo County and the southwest quarter of San Francisco. She represents much of the territory that had been represented by her political mentor, Leo Ryan. In 1978, while working as his aide, Speier survived five gunshot wounds she received when Ryan was assassinated during the Jonestown massacre.
Speier was a member of the California State Senate, representing parts of San Francisco and San Mateo counties. On April 8, 2008, she won the special election for the vacated United States House of Representatives seat of the late Congressman Tom Lantos.
A Caltrain Express locomotive is named in her honor.