Sandy Duncan (born February 20, 1946) is an American singer, dancer and actress in TV and stage. She was best known for Sandy Hogen in The Hogen Family, Micheal and Amy's mother in the first three Barney and the Backyard Gang videos, "Queen Uberta" from Richard Rich's The Swan Princess movie trilogy and had her own series The Sandy Duncan Show.

For Disney, she starred in the 1974 television special Sandy in Disneyland, where she and other special guests went on a musical tour of Disneyland. She also voiced Vixey in The Fox and the Hound, guest-starred in episode 114 of The Muppet Show and played Katie Dooley in The Million Dollar Duck, a tour guide in Christmas in Disneyland and Dr. Elizabeth 'Liz' Barlett in The Cat from Outer Space.