Stefanie Horn (born 9 January 1991 in Bottrop, Germany)[1] is a German-Italian slalom canoeist who competed for Germany from 2006 to 2012.

Horn is an athlete of the Gruppo Sportivo della Marina Militare,[2] She won a silver medal in the Mixed C2 event at the 2017 ICF Canoe Slalom World Championships in Pau together with Niccolò Ferrari.

[3] She also won four medals (1-2-1) at the European Championships, including a bronze in kayak cross at the 2023 European Games in Kraków.

She finished 8th in the K1 event at the 2016 Summer Olympics in Rio de Janeiro[4][5] and 4th in the K1 event at the 2020 Summer Olympics in Tokyo.

Her older sister Jacqueline represented Germany in canoe slalom.