The Diocese of Phú Cðá»Âng () is a Roman Catholic diocese in southern Vietnam. Since 2012 the bishop of the diocese has been Joseph Nguyá» n Tấn Tðá»Âc. The diocese in its present form was founded on October 14, 1965. By 2013, the diocese of Phú Cðá»Âng had about 141,239 Catholics (4.8% of the population), 161 priests and 96 parishes.
The diocese covers an area of 10,855 kmò, and is a suffragan diocese of the Archdiocese of Ho Chi Minh city.
Sacred Heart Cathedral in Thá»§ Dầu Má»Ât City is the cathedral of the diocese.