Liz Kniss is an American politician who served as Mayor of Palo Alto, California. Kniss was elected to the Palo Alto City Council in 2013. She also serves on the boards of the Bay Area Air Quality Management District and the Family Health Plan of Santa Clara County. Kniss served three terms as on the Santa Clara County Board of Supervisors in San Jose, California and was president of the board twice in 2005 and 2009.