Sankt Augustin is a town in the Rhein-Sieg district, in North Rhine-Westphalia, Germany. It is named after the patron saint of the Divine Word Missionaries, Saint Augustine of Hippo (354-430). The Missionaries established a monastery near the current city centre in 1913. Sankt Augustin is situated about eight km north-east of Bonn and three km south-west of Siegburg.
Sankt Augustin is twinned with:
- Template:Flagicon Grantham, United Kingdom
- Template:Flagicon Mevaseret Zion, Israel
- Template:Flagicon Szentes, Hungary.
- West Regional Command German Federal Police, (Bundespolizei) headquarter of Border Guards, Group 9 GSG 9 (Grenzschutzgruppe 9)
- Logistics of unified armed forces of Germany, (Bundeswehr)
- Berufsgenossenschaftliches Institut für Arbeitsschutz - BGIA, the Occupational Institute for Work Safety
- Carl Adam Petri (1926-2010), computer scientist, worked in Sankt Augustin between 1968 and 1991
- Klaus Kinkel (* 1936), former politician (FDP), living in Sankt Augustin