St Thomas' Church (French: Église Saint-Thomas, German: Thomaskirche) is a historical building in Strasbourg, eastern France. It is the main Lutheran church of the city since its Cathedral became Catholic again after the annexation of the town by France in 1681. It is nicknamed the "Protestant Cathedral" (la cathédrale du Protestantisme alsacien, Kathedrale der Protestanten) or the Old Lady (Die alte Dame), and the only example of a hall church in the Alsace region. The building is located on the Route Romane d'Alsace. It is classified as a Monument historique by the French Ministry of Culture since 1862. Its congregation forms part of the Protestant Church of Augsburg Confession of Alsace and Lorraine.
The site on which the current church stands was used as a place of worship under the patronage of Thomas the Apostle as early as the sixth century. In the ninth century, Bishop Adelochus established a magnificent church with adjoining school, however both burned down in 1007, and again in 1144. In 1196, construction began on the façade of a new, fortress-like building with an imposing steeple, built in the Roman style. Interrupted several times, the building work was completed in 1521, in the style of the late Gothic. Around 1450, the church commissioned a set of oil on panel paintings dedicated to the Passion of Jesus. Most of the surviving panels of this once scattered set are now kept in the Staatliche Kunsthalle in Karlsruhe, which is why the anonymous master who painted them earned the notname of ″Master of the Karlsruhe Passion″. It is assumed that he is identical with the painter Hans Hirtz, recorded in Strasbourg before 1460. The upper right angle of the Christ Carrying the Cross shows the St. Thomas Church as it still looks today.