Roberta Linn (born April 30, 1931, in Gravity, Iowa) is an American singer and entertainer. She is most associated with the Rat Pack and the Las Vegas Strip, where she was a regular performer with Freddie Bell and the Bellboys in the 1950s and 1960s. From 1949 to 1954, she sang with the Lawrence Welk group, "The Champagne Ladies".