James Robert Knox (2 March 1914 – 26 June 1983), an Australian Roman Catholic cardinal, was President of the Pontifical Council for the Family, between 1981 and 1983; a Prefect of the Congregation for Divine Worship and the Discipline of the Sacraments, between 1974 and 1983; and the fifth Archbishop of Melbourne, serving between 1967 and 1974.