The Rhein-Sieg-Kreis (Kölsch: Rhein-Siech-Kreis) is a Kreis (district) in the south of North Rhine-Westphalia, Germany.

[2] The district council consists of 86 seats, half of which are chosen directly in 43 constituencies.

On 3 November 2020, the Christian Democrats and the Greens announced their coalition agreement, renewing their 21-year governance.

[4][5] The red lion is the symbol of the dukes of Berg, who owned a large part of the district.

The yellow sword is the symbol of Saint Michael, the patron of the mighty Michaelsberg Abbey in Siegburg.