Sheila Ann Dixon (born December 27, 1953) is an American politician who served as the forty-eighth mayor of Baltimore, Maryland. When the former mayor, Martin O'Malley, was sworn in as governor on January 17, 2007, Dixon, the president of the Baltimore City Council, served out the remaining year of his term. In November 2007, she was elected mayor. She was the first African-American woman to serve as president of the City Council, Baltimore's first female mayor, and Baltimore's third black mayor.