St. Nikolaus von Flüe is the name of a Catholic church in Wörsdorf, part of Idstein, Rheingau-Taunus-Kreis, Germany. The official name of the church is Katholische Pfarrkirche St. Nikolaus von Flüe. When it was dedicated, the name was St. Nikolaus-von-Flüe-Friedenskirche, designating it as a peace church. The Wörsdorf parish belongs to St. Martin Idsteiner Land. The church, the first Catholic church in Wörsdorf, was designed by Johannes Krahn, and consecrated in December 1962.

St. Martin is the name of a Catholic parish and church in Idstein, Rheingau-Taunus-Kreis, Germany. The official name of the church is Katholische Pfarrkirche St. Martin. The name of the parish became St. Martin Idsteiner Land on 1 January 2017, when it was merged with five other parishes. The parish is part of the Diocese of Limburg.