St Andrew's Church, Roman Catholic church in Westland Row, Dublin, Ireland.

St Andrew's Church is a Roman Catholic church on Westland Row, built 1832–37 to a design by John Bolger that reused James Leeson's plans for a Townsend Street church. Its exterior has a Doric portico with a statue of St Andrew carved by John Smyth. The interior holds a three-manual organ built by John White in 1870–71, containing ten ranks of pipework from Aristide Cavaillé-Coll's workshop.

Construction began in 1832 and the church opened for worship in 1834, completed in 1837. The architect John Bolger used plans by James Leeson for a previous church in Townsend Street, with assistance from Francis Johnston and James Lever; Richard Turner built the roof. On 7 January 1940 ornamentation fell from the ceiling, prompting a refurbishment that began in 1942, when the interior was renovated, painted and sculptures restored.

The Doric portico carries a statue of St Andrew carved by John Smyth (1776–1840), son of Edward Smyth, who made the riverine heads on the Custom House. Inside, the sculptures were restored and the interior repainted during the refurbishment begun in 1942, after ornamentation fell from the ceiling on 7 January 1940.

The Doric portico on Westland Row marks the entrance, a short walk from Pearse Street and the Luas stop at Trinity. The church is an active parish, so visits are best made outside Mass times; the interior steps and crypt area are not step-free.

Dominic Corrigan (1802–1880), the physician who described the collapsing pulse and gave his name to Corrigan's sign, is buried in the church crypt. The church also keeps an organ built by John White of Dublin in 1870–1 for £1,000, a three-manual instrument holding ten ranks of pipework from Aristide Cavaillé-Coll's Paris workshop.