Soest 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 145. It is located in eastern North Rhine-Westphalia, comprising the district of Soest.
Soest was created for the 1980 federal election. From 2017 to 2025, it has been represented by Hans-Jürgen Thies of the Christian Democratic Union (CDU). Since 2025 it is been represented by Oliver Pöpsel of the CDU.
Soest is located in eastern North Rhine-Westphalia. As of the 2021 federal election, it is coterminous with the Soest district.
Soest was created in 1980. In the 1980 through 1998 elections, it was constituency 118 in the numbering system. From 2002 through 2009, it was number 147. In the 2013 through 2021 elections, it was number 146. From the 2025 election, it has been number 145. Its borders have not changed since its creation.
The constituency has been held by the Christian Democratic Union (CDU) during all but one Bundestag term since its creation. It was first represented by Hermann Kroll-Schlüter from 1980 to 1990, followed by Jürgen Augustinowitz from 1990 to 1998. Eike Hovermann of the Social Democratic Party (SPD) was elected in 1998. Bernhard Schulte-Drüggelte regained it for the CDU in 2002 and served until 2017. Hans-Jürgen Thies was elected in 2017 and was re-elected in 2021. In 2025 Oliver Pöpsel was elected