Stephan Güsgen (born 26 March 1962 in Dormagen, North Rhine-Westphalia) is a retired West German swimmer, who specialized in sprint freestyle events.

[1] He represented West Germany at the 1988 Summer Olympics, and also became a member of and a resident athlete for TSV Bayer Dormagen, under his personal coach Jürgen Schmitz.

[2][3] Gusgen competed only in the inaugural 50 m freestyle at the 1988 Summer Olympics in Seoul, where he finished fourteenth in the B final with a time of 23.55.

[4] Shortly after the Games, Gusgen officially retired from swimming, and later worked as a sport medicine orthopedic surgeon at a local hospital in Dormagen.

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