Yvonne Frances Barrett (1946 – 2 September 1985) was an Australian pop singer. She reached the top 60 Kent Music Report singles chart with her cover versions of Petula Clark single "You're the One"/"Little People", in October 1965. She released other singles in that, and the following, decade. Barrett also appeared on TV shows in the 1960s and 1970s. She became a session singer and performed on the club circuit. Barrett married Hoang Van Truong, a former Vietnam War veteran, in December 1983; the couple separated in the following year. Truong was found guilty of Barrett's 1985 murder and was sentenced to life imprisonment without parole, in August 1986.