Sandi Griffiths (born Sandi Jensen on August 1, 1946) is an American singer. She is best known as a performer on American television's The Lawrence Welk Show.
A native of the San Fernando Valley in Los Angeles, California; she started singing as a child and by the age of five, was a regular on TV by appearing on the Art Linkletter program, House Party. She continued to perfect her music skills all throughout school, and in college, at Brigham Young University where she teamed with and became friends with Sally Flynn.
At BYU, the duo sang at the school's musical revue known as the Program Bureau, later at Disneyland and then went over to Vietnam to entertain the troops as part of a USO tour. After three weeks, she and Sally returned to the states to concentrate on their professional careers, in which their break came when they were asked to open for Jack Jones at Harrah's in Lake Tahoe.
It was here that Lawrence Welk and his music makers in the summer of 1967 played their annual three-week engagement at Harrah's.