Darleen Carr was born as Darlene Farnon on December 12, 1950 in Chicago, Illinois, USA. She is the younger sister of Charmian Carr and Shannon Farnon, and the daughter of Rita Oehmen, an actress, and Brian Farnon, a composer.
Her film roles include appearances in Monkeys, Go Home! (1967) with Maurice Chevalier, The Impossible Years (1968) with David Niven, Death of a Gunfighter (1969) with Richard Widmark, The Beguiled (1971) with Clint Eastwood, Eight Days a Week (1997) with Keri Russell, and TV horror movies such as The Horror at 37,000 Feet (1973) and the TV remake of Piranha (1995).
She is also a singer and sang in The Sound of Music, dubbing the high singing voice for Duane Chase as Kurt. She released an album, The Carr-DeBelles Band, in 1988.
In 1974, she married Jason Laskay, but they divorced in 1977. She also had one son who died in 1982. In 1992, she married Jameson Parker.