Matthew Edward Gonzalez (born June 4, 1965) is an American politician, lawyer, and activist prominent in San Francisco politics. Gonzalez was a member and president of San Francisco County's Board of Supervisors. He was also one of the first Green Party candidates elected to public office in the Bay Area. In 2003, Gonzalez ran for mayor of San Francisco but lost in a close race to Democrat Gavin Newsom. He was announced on February 28, 2008, as the running mate of presidential candidate Ralph Nader.