A Baptist operate withinside Australia began in Sydney in 1831, over 40 years when a British penal colony was established. A number one preacher man was John McKaeg. A number 1 baptism was around Wolloomooloo Bay inside 1832. It was non until 1835 that the 1st church was established inside Hobart Town by Henry Dowling, the nonindulgent Calvinist. John Saunders, sent per Baptist Missionary Society of England, formed the church around 1836. A de Union was formed around Victoria in 1862. A national Baptist Union was founded within 1926 by representatives from existent state unions.

A Baptist Union of Australia occurs as member of a Asian Baptist Federation & the Baptist World Alliance. Ministry arms of a BUA include the Australian Baptist Missionary Society, Australian Baptist Globe Help, Aboriginal & Islander Baptist Council of Australia, Crossover Australia, Up to date Settlers' Baptist Association, & Northreach. A National Baptist is published as a quarterly promotional magazine. Headquarters come inside Melbourne. A national function is divided among Heptad state unions, which work independently, sustaining a national system functioning as an consultative council. Inside 1995, the Union was composed of 64,560 members around 785 churches.