Dame Phyllis Irene Frost AC DBE JP (14 September 1917 – 30 October 2004) was an Australian welfare worker and philanthropist, known for her commitment to causes, such as helping prisoners. She chaired the Victorian Women's Prisons Council for many years, established the Keep Australia Beautiful movement, worked for Freedom from Hunger and raised millions of dollars for charity.
Phyllis Irene Turner was born in 1917 in Brighton, Melbourne. She attended Presbyterian Ladies' College, Melbourne and the University of Melbourne, training in physiotherapy and, later, criminology. The latter would help her to better understand the female offenders, to whom she had committed her assistance.
At university she met Glenn Frost, whom she was to marry in 1941; the couple had three daughters.
Phyllis Frost was appointed a Commander of the Order of the British Empire (CBE) in the 1963 Queen's Birthday Honours.
She was appointed a Dame Commander of the order (DBE) in the 1974 New Year's Honours, for "outstanding service to the community".
In the 1992 Australia Day Honours, Dame Phyllis was named a Companion of the Order of Australia (AC).
On 1 January 2001, she was awarded the Centenary Medal, "for long and dedicated voluntary service to welfare at local, state and national levels".
She died at aged 87 in Nunawading, Melbourne, Victoria, Australia on 30 October 2004; survived by her three daughters.