Rosemarie Springer (also Rosemarie Alsen, née Lorenz, born July 5, 1920) is a German equestrian. Born in Danzig on July 5, 1920, she was the daughter of Werner Lorenz, who would later become an SS member and head of the Hauptamt Volksdeutsche Mittelstelle in Nazi Germany. She first rode a horse at the age of two, sitting on her father's lap, and took up equestrianism at a young age. Her career was interrupted by World War II, however, and she served as a nurse during the conflict. She did not resume riding until 1950 but, soon after, her talents were spotted at horse show in Berlin. Among other international appearances, she participated in the individual dressage event at the 1960 Summer Olympics in Rome, where she finished seventh in a field of seventeen competitors. She retired from active competition in the late 1970s, having been the German national champion in women's dressage seven times.
Following her competitive career, Springer took up judging and training, the latter of which still occupies her time as of 2012. In her late 80s she continued to ski twice a year and occasionally ride in informal tournaments in Germany. She married cement manufacturer Horst-Herbert Alsen in 1941 and divorced him in 1953 to marry Alsen's friend, journalist Axel Springer. This union that lasted until 1961, when Springer left her to marry Helga Ludewig.