Holy Trinity Church, Protestant church in Eschweiler, Germany.

Holy Trinity Church is a red-brick hall church with abseits, or partially developed side aisles. A transverse structure at the west end carries the square tower, which rises into an octagonal belfry and a steep dark spire; a small round turret with a pale conical roof sits between tower and nave. The east end closes with a three-part choir and an ambulatory around the central apse. Inside, slender brick columns with pointed arches and white vaults divided by brick ribs line the aisle.

Funds were raised through collections and donations, and the foundation stone was laid in 1890; the church was consecrated on 4 February 1892. It was designed by Cologne architect August Albes, a pupil of Conrad Wilhelm Hase, in neo-Gothic forms. It was called Lutherkirche until 1957, when it was renamed, and it has been a listed monument since 1973.

Church music is central to the congregation: a gospel choir, vocal ensemble, senior choir, trombone choir and a handbell choir active for over 40 years. A memorial stone beside the church recalls the synagogue on Moltkestrasse burned in the November pogroms of 1938.

The church stands at the end of Marienstraße on Martin-Luther-Platz, at the corner of Moltkestraße, next to the Martin-Luther-Haus community centre. Renovation ran in stages from 2020 to 2026: subsidence cracks in the tower and aisles first, the tower in 2023/24 with its gables and pinnacles rebuilt, then in 2025 the roof, windows and part of the interior painting. The brick columns, capitals, ribs and arches are visible again since the 1990 restoration.

The 1990 organ by Rudolf von Beckerath Orgelbau follows the North German Baroque style and was enlarged in spring 2019 to 41 stops on three manuals. It is the third instrument in the church: Walcker built the first in 1893, destroyed in 1944, and Peter of Cologne the second in 1951.