Matthew Edward Gonzalez (born June 4, 1965) is an American politician, lawyer, and activist. He was an important figure in San Francisco politics in the years 2000–2005, when he served on San Francisco County's Board of Supervisors and was president of the Board. In 2003, Gonzalez, running as a member of the Green Party, lost a close race for mayor of San Francisco to Democrat Gavin Newsom.