St John the Baptist Church is the oldest church in Canberra, Australia, and also the oldest building within Canberra's city precinct. It is sited at the corner of Anzac Parade and Constitution Avenue in the suburb of Reid.
St John's is an Anglican church, and is oriented east-west, with the nave to the west and the main entrance (with choir loft and organ above) to the east. The foundation stone was laid in 1841, with the church being consecrated on 12 March 1845 by William Grant Broughton, the first and only Bishop of Australia.
The building as it stands today was constructed over a period of several years and was completed in three stages:
Sandstone for the church was sourced from quarries located at the base of Black Mountain and Quarry Hill (located in the suburb of Yarralumla). The original 20-foot church tower was erected in 1845 but developed a two-foot lean, was deemed unsafe and was dismantled in 1864. The present tower was designed by Edmund Blacket and erected during the period 1865-1870. Sandstone for the tower’s window mouldings was hauled by bullock from the Camden-Bargo district, a distance of a hundred miles. The spire was added in 1878.
The church bells were donated by Governor-General William Sidney, 1st Viscount De L'Isle and mark his term of office (1961–65).
A practice hall for the Canberra Boys' Choir is also housed within the church complex.
The church hall has a mural painting at its southern end, depicting people and events from the life of the church and the region. Rendered in a simplistic style, the mural depicts subjects as diverse as: a theodolite, a microscope, an Australian aborigine man, Bogong moths, Merino sheep, liturgical symbols, the Guides Australia logo and a girl in the uniform, a Boy Scout, Old Parliament House, Canberra, early ministers of the church and settlers including Robert Campbell and his nearby house "Duntroon" (also shown) that is now part of the Royal Military College, Duntroon.