St Thomas Church is a parish church in the St Thomas district of Swansea in Wales. It is a Grade II listed building and is the only church in Swansea to operate a 24/7 congregation and food bank.
The church was originally built in 1886-90 by the Grenfell family, who owned land in the area. It was designated a Grade II listed building in February 2004. Its spire, at , makes it one of the tallest buildings in Swansea. The church remains an active parish church in the Diocese of Swansea and Brecon. In the 21st century it became the first in the area to establish a 24/7 congregation and foodbank.