1901 - 1995
| 1901 | Federation. |
| 1905 | Australian Catechism inaugurated. |
| 1909 | Death of Mary MacKillop; 1000 sisters now; St Columba's Springwood. |
| 1911 | Death of Moran; Michael Kelly as Archbishop of Sydney; Catholic Federation formed in Melbourne. |
| 1913 | Archbishop Daniel Mannix to Melbourne. |
| 1914 | World War I declared. |
| 1916 | Catholic Women's Social Guild; 1916-7 conscription referendums. |
| 1917 | James Duhig as Archbishop of Brisbane. |
| 1919 | Democratic Party founded in NSW. |
| 1920 | Democratic Party fails in elections; Liguori case. |
;)
St Patrick's Day Parade, Melbourne in the early 1920s
| 1920s | Irish troubles; Mannix "arrested" 1920. |
| 1928 | Eucharistic Congress in Sydney. |
| 1930s | Great Depression. |
| 1934 | Eucharist Congress in Melbourne. |
| 1936 | Catholic Worker begins; also the Grail. |
| 1936-9 | Spanish Civil War. |
| 1937 | National Secretariat for Catholic Action (FK Maher & BA Santamaria as leaders); N.T. Gilroy as Coadjutor to Sydney. |
| 1939 | Pius XII elected. |
| 1939-45 | World War II. |
| 1940 | Death of Archbishop Kelly; Gilroy succeeds. |
| 1942 | Catholic Weekly begins in Sydney. |
| 1945 | Catholic Social Study Movement formed. |
| 1946 | Post-war immigration program. |
| 1952 | Fr Peyton Rosary Crusade. |
| 1955-70 | Schools enrolment "explosion". |
| 1962-5 | Vatican II. |
| 1963 | Death of John XXIII & Mannix; Paul VI. |
| 1964 | Mass in English; first direct grants to Cath schools. |
| 1967 | Populorum Progressio. |
| 1968 | Humanae Vitae; Vietnam; opening of St Paul's National Seminary at Kensington. |
| 1970 | Paul VI becomes first pope to visit Australia. |
| 1971 | Gilroy retires; James Freeman Archbishop of Sydney. |
| 1970s | Substantial direct funding for Cath schools. |
| 1973 | First Maronite bishop in Australia. |
| 1974 | Marriage Encounter spreads to Australia. |
| 1975 | Patrick Dodson, first Aboriginal priest. |
| 1976 | Australia no longer a mission country a/c Rome. |
| 1977 | The Uniting Church founded. |
| 1978 | John Paul II. |
| 1980 | first Catholic lay people graduate in theology in Australia. |
| 1982 | Freeman retires; Edward Clancy as Archbishop of Sydney. |
| 1986 | John Paul II visits Australia. |
| 1991 | Foundation of Notre Dame University and of Australian Catholic University. |
| 1995 | Mary McKillop declared Blessed. |
;)