St. Marien, Roman Catholic parish church in Bad Homburg vor der Höhe, Germany.

St. Marien is a Roman Catholic parish church on Dorotheenstrasse in Bad Homburg vor der Höhe, built of tuff and grey sandstone. Its square tower carries a grey pointed spire with corner spires and a black-faced clock, while the gabled facade has a large rose window above a pointed portal arch. Inside, a single nave with two bays leads to a short transept and a five-sided apse; the 1910 gilded altarpiece and blue and amber windows stand behind rows of wooden pews.

The foundation stone was laid in 1892, and the church was consecrated on August 14, 1895. Following the extinction of the Landgrave family in 1866, the parish was incorporated into the Diocese of Limburg in 1884.

The parish has been based at Dorotheenstrasse 15/17 since the church was built; the neighbouring baroque rectory of 1715, with its entrance in the middle of the facade, frames the forecourt. In 1981 St. Marien and the Kirdorf community jointly organised the Kreuzfest, a feast of the Cross. The church is the seat of the deanery founded in 1915.

The church is set back from Dorotheenstrasse, creating an open forecourt framed by the baroque parish house at number 13/15 (1715) and the house at number 21. The main facade faces the axis of Waisenhausstrasse. Since 1907 a short open hall precedes the main portal. The tower adjoins the first bay of the nave.

Queen Victoria of Great Britain was among the distinguished guests at the consecration in 1895. Her presence highlighted the importance this new church held for the city at that time.