John Clifford Farrar (; born 8 November 1946) is an Australian-born
music producer, songwriter, arranger, singer and guitarist. As a musician, Farrar is a former member of several rock and roll groups including The Mustangs (1963–64),
The Strangers (1964–70),
Marvin, Welch & Farrar (1970–73), and
The Shadows (1973–76); in 1980 he released a solo
eponymous album. As a songwriter and producer he worked with
Olivia Newton-John from 1971 to 1989. He wrote her number-one hit singles: "
Have You Never Been Mellow" (1975), "
You're the One That I Want" (1978 duet with
John Travolta), "
Hopelessly Devoted to You" (1978), and "
Magic" (1980). He also produced the majority of her recorded material during that time including her number-one albums,
If You Love Me, Let Me Know (1974),
Have You Never Been Mellow (1975) and
Olivia's Greatest Hits Vol. 2 (1982); and he was a co-producer of (1978) – the soundtrack for the film of the
same name. Farrar also produced Newton-John's first United States number-one hit single, "
I Honestly Love You", which was awarded the
Grammy Award for Record of the Year in 1975. In 1969 Farrar married fellow Australian singer,
Pat Carroll – formerly Newton-John's singing partner. In July 1970 Farrar and Carroll relocated to the United Kingdom and from late 1975 they have resided in the US. They are the parents of
Sam Farrar (
Phantom Planet bassist and
Maroon 5 touring member) and Max Farrar (Golden Ghost guitarist and keyboardist).