St. Mary's Catholic Church, South Brisbane, Roman Catholic church in South Brisbane, Australia

St. Mary's Catholic Church is a Catholic church in South Brisbane featuring classical basilica architecture with a wide central nave, narrow side aisles, and a semicircular chancel. The building displays rounded arches, rose windows, and other traditional architectural elements typical of its era.

Cardinal Patrick Francis Moran laid the foundation stone in 1892, and Archbishop Robert Dunne opened the church in 1893, with construction continuing until 1929. This extended building phase reflected the careful craftsmanship and financial demands of the project.

Most names in St Mary's baptism register around 1900 were Irish, reflecting the parish's working-class Catholic congregation. The original 1865 wooden chapel on the site doubled as a school from 1866 and continued as one until new school buildings went up in 1909. A large bell in a timber belfry was erected beside the church in 1914, and a Sisters of Mercy convent followed in 1915 at Cordelia and Peel streets.

The church stands at 20 Merivale Street, on the corner of Peel Street, in South Brisbane. The main entrance faces Merivale Street, and the 1929 sanctuary extends the eastern end of the building. The former presbytery, now the parish house, stands beside the church; the 1915 Sisters of Mercy convent is diagonally opposite on the corner of Cordelia and Peel streets.

The high altar installed at the 1893 opening had previously been used at St Stephen's Cathedral. Funds were so short that the rose window and eastern end were temporarily built in timber, and the planned tower, transepts and chancel were never erected; the permanent sanctuary only came in 1929.