Ruby Smith (August 24, 1903 – March 24, 1977) was an American classic female blues singer. She was a niece, by marriage, of the better-known Bessie Smith, who discouraged Ruby from pursuing a recording career. Nevertheless, following Bessie's death in 1937, Ruby recorded twenty-one sides between 1938 and 1947. She is also known for her candid observations on her own and Bessie's lifestyle.