Penny Jay (June 12, 1925 – March 29, 2006) was an American country music singer and songwriter, who was active from the 1940s to the 1960s. She is best known for "Don't Let Me Cross Over" a song she wrote which reached #1 on the country music charts in late 1962. In the early '50s, Jay began performing as part of a duo with a friend named Marie Wilson. The pair were billed as "Jenny & Jill", and they recorded several original sides for OKeh Records, including "A Million Other Hearts".