Peter John Elliott (born 1 October 1943 in Melbourne) is an Australian prelate of the Catholic Church.
He was an auxiliary bishop of the Archdiocese of Melbourne from 2007 to 2018.
He was ordained to the priesthood by Cardinal Lawrence Joseph Shehan, Archbishop of Baltimore, on 19 February 1973 during the 40th International Eucharistic Congress.
Pope Benedict XVI appointed him on 30 April 2007 as titular bishop of Manaccenser and an auxiliary bishop of Melbourne.
He received his episcopal consecration from Denis Hart, Archbishop of Melbourne, on 15 June with Cardinal George Pell, Archbishop of Sydney, and Ambrose Battista De Paoli, Apostolic Nuncio in Australia, as co-consecrators.
He is a convert to Catholicism from Anglicanism.
His father was an Anglican parish priest in Melbourne.
He is of partial Sorbian descent.
His maternal grandmother came from a family Lutheran Sorbs who immigrated to the Wimmera region of Victoria, from what is now the German state of Saxony in the early 19th century.
Their emigration from Germany was motivated by their dissent from the union of Lutheran and Calvinist churches that had recently taken place there.Pope Francis announced in November 2018 that he had accepted Elliott's resignation, which was submitted on reaching the retirement age of 75.