St Barnabas' Church, Anglican church building in Mount Eden, Auckland, New Zealand.

St Barnabas' Church is an Anglican church in Mount Eden, Auckland, whose majority is now brick, with the small wooden nave of the 1848 building serving as the nave to the brick structure. It is registered as a Category 2 historic place with Heritage New Zealand.

St Barnabas' was built in 1848 at Point Dunlop, east of Mechanics Bay, designed by Frederick Thatcher as one of the original Selwyn churches. In 1866 the nave was widened to the transepts and lengthened on one side. The church was moved to its Mount Eden site in 1877, and its first service there was held on Sunday, 6 October 1878. A brick rebuild begun in 1903 was never completed, leaving the old timber nave in place.

The church was part of the Parish of the Church of the Holy Sepulchre, and its first service on the Mount Eden site was held on Sunday, 6 October 1878. A war memorial campanile was erected in 1964, and the building is registered as a Category 2 historic place by Heritage New Zealand.

The church stands in Mount Eden, at the corner of Mt Eden Road and Bellevue Road, on the site it was moved to in 1877. The 1964 war memorial campanile marks the entrance. The surrounding gardens give space to walk around the building.

The original wooden structure from 1848 was never fully replaced by the 1903 brick reconstruction, so the timber nave remains preserved beneath the newer brickwork. This creates a visible layer of architectural history visible at certain points inside the building.