The Anglican Diocese of Perth is one of the 23 dioceses of the Anglican Church of Australia. The constitution of the Diocese of Perth was passed and adopted in 1872 at the first synod held in Western Australia. In 1914, the Province of Western Australia was created and the diocesan bishop became ex officio metropolitan bishop of the new province and therefore also an archbishop. The diocese incorporates the southern part of the state of Western Australia and includes the Christmas and Cocos Islands. The other dioceses in the Anglican Province of Western Australia are the Diocese of Bunbury and the Diocese of North West Australia.
The diocese has traditionally had a variety of churchmanship and in recent years has largely moved toward a more liberal and moderate Catholic style. There are, however, parishes and clergy representative of all the main Anglican traditions.
As a more liberal diocese, the region voted to recognise same-gender relationships in 2013. While Archbishop Roger Herft vetoed the motion, he did say that "what we have in the Diocese of course is a number of people in same-sex relationships amongst the clergy and amongst the laity and we have always said that people of all forms of sexuality and orientation are welcome..." In a statement on human sexuality, Archbishop Herft confirmed that "there are gay and lesbian clergy serving in the priesthood. They are licensed by me and are honoured and respected as priests..." In April 2016, St. Andrew's Church within the diocese blessed a same-sex couple's relationship.
The cathedral church of the diocese is St George's Cathedral, Perth.