Sonneborn is a municipality in Thuringia, Germany.
Sonneborn may also refer to: Harry J. Sonneborn (died 1992), executive of McDonald's Jan Martín Sonneborn (born 1984), German-Israeli-Spanish basketball player Jessica Sonneborn, American actress, writer, director and stunt double Engelbert Sonneborn (born 1938), German retired career counselor and independent candidate at the 2017 German presidential election Martin Sonneborn (born 1965), German satirist Rudolf Sonneborn (1898–1986), American businessman, led the Sonneborn Institute Tracy Sonneborn (1905–1981), American biologist Sonneborn–Berger score, tool to decide ranking of Swiss system tournament in chess and other games Sonneborn (Nuhne), a river of North Rhine-Westphalia, Germany, tributary of the Nuhne Sonneborn Building, also known as Paca-Pratt Building, a historic loft building in Baltimore, Maryland, United States