Lucy Ann Polk (May 16, 1927 − October 10, 2011) was an American jazz and big band vocalist. Miss Polk is perhaps best known for her period with Les Brown's orchestra in the mid-fifties, a time when the band was considered to be at its best, featuring such talents as tenor saxophonist Dave Pell and trumpeter Don Fagerquist. She also sang and recorded with several other bands, including Kay Kyser, Tommy Dorsey, and Dave Pell. Miss Polk won the Downbeat "Best Girl-Singer with Band" award in 1951, 1952, 1953 and 1954. She released three solo albums, only one of which has been reissued on CD, 1957's Lucky Lucy Ann.