Martha S. Lewis (February 24, 1924 in Kensett, Arkansas – July 2, 2007 in Albany, New York) was an American government official and social worker. She had a long career as a ground-breaking social worker in the metropolitan New York City area and elsewhere. In the 1970s, she was the highest ranking African-American official in any state government, as a deputy commissioner for the Department of Social Services in the New York State government. She was also a pioneer in the civil rights movement.