Anni Rehborn (20 November 1907 – 30 November 1987) was a German swimmer who won a bronze medal in the freestyle relay at the 1927 European Aquatics Championships. She entered the 1928 Summer Olympics, but did not compete for unknown reasons. During her career she won eight national titles in the 100 m backstroke (1923–1925, 1927–1929) and 100 m freestyle events (1923–1924).