Rheingau-Taunus – Limburg is an electoral constituency (German: Wahlkreis) represented in the Bundestag. It elects one member via first-past-the-post voting. Under the current constituency numbering system, it is designated as constituency 178. It is located in southwestern Hesse, comprising the Rheingau-Taunus-Kreis district and the southwestern part of the Limburg-Weilburg district. Rheingau-Taunus – Limburg was created for the inaugural 1949 federal election. Since 1998, it has been represented by Klaus-Peter Willsch of the Christian Democratic Union (CDU).