Linda Perhacs (born 21 September 1943) is an American psychedelic folk singer, who released her first album, Parallelograms, in 1970 to scant notice or sales. The album was rediscovered by record enthusiasts and reissued numerous times beginning in 1998, growing in popularity with the rise of the New Weird America movement and the Internet. In 2014, she released a second album titled The Soul of All Natural Things, and a third, I'm a Harmony, in 2017.