St. Thomas's Church , Dublin, Anglican church building in Dublin, Ireland

St. Thomas's Church was a Church of Ireland parish church on Marlborough Street, Dublin, built in 1758–62 to designs by architect John Smyth. Its facade was modelled on Palladio's Il Redentore in Venice, and at the time it was considered the most beautiful church facade in the city. The church was gutted by fire in July 1922 and removed in 1926.

St Thomas's Church was built in 1758–62 on Marlborough Street, after St Mary's parish was divided to serve a growing population; Parliament granted £2,000, then another £1,000 to finish it. John Smyth designed it on Palladio's Il Redentore in Venice. Gutted by fire in July 1922 during the Civil War, it was removed in 1926 to extend Gloucester Street to O'Connell Street.

The parish of St Thomas's held 17,108 inhabitants in 1825, and the church served a dense district off Marlborough Street. Rev. Charles Stuart Stanford was rector from 1852 to 1872, and Rev. John Grainger left in 1866 to found St Barnabas's in East Wall. Edward Stratford, 2nd Earl of Aldborough, was buried here.

The church no longer stands: it was removed in 1926 to extend Gloucester Street, now Sean Mac Dermott Street, up to O'Connell Street. Its foundation stone was kept and set into the new St Thomas's Church on Cathal Brugha Street, built in 1930 on the site of the former parochial hall. Look for that stone there.

The church's foundation stone was kept when the building was demolished in 1926 and is set into the new St Thomas's Church on Cathal Brugha Street, built in 1930. The old church itself stood on Marlborough Street from 1762 until the street widening removed it.