Biserica Sfântul Dumitru - Poștă, Orthodox church in central Bucharest, Romania.

Biserica Sfântul Dumitru - Poștă stands at Strada Franceză no. 1, near the former Palace of Posts, which gave the church its name. It was built in 1819 on the site of a 14th-century church. Inside are relics of Saints Pantelimon, Haralambie, Antipa and Nicanor, and the only old icon of Saint Jude Thaddeus in Bucharest.

Archaeological digs from 1954 in the Curtea Veche sector found a Christian necropolis and a 15th-century church on this site, linked to the medieval fortress of Vlad Țepeș. The church is first mentioned in 1654 as 'Sfeti Dimitrie'; a 1680 act names the Bălăceanu family as founders. In 1741–1746 Stroe Râmniceanul, later monk Isaia, and his nephew Radul Atanasievici rebuilt it, and in 1754 it was dedicated to the bishoprics of Râmnic and Buzău. The present church was built in 1819.

The name "de Jurământ" (of the Oath) comes from the Bălăceanu family, who are recorded as founders in a document of 7 March 1680. The church is the university chapel of Bucharest and holds relics of Saints Pantelimon, Haralambie, Antipa and Nicanor. It is the only church in the capital with an old icon of Saint Jude Thaddeus.

The church is located near the National Museum of Romanian History, making it easy to explore the surrounding area. Visitors should know that regular services take place and respectful conduct is expected during worship.

Excavations in 1954 uncovered traces of a 15th-century place of worship from the medieval fortress period beneath the current structure. This finding reveals that religious life has been continuous at this location across several centuries.