List of Famous people named Otto

Otto Benndorf was a German-Austrian archaeologist who was a native of Greiz, Principality of Reuss-Greiz. He was the father of physicist Hans Benndorf (1870–1953).

Prof. Otto Soemarwoto was an Indonesian botanist and professor of plant physiology at Padjadjaran University and was director of the National Biology Institute from 1964 to 1972; he also served as director of the Institute of Ecology from 1972 until 1991. His work in the latter role has been cited as a primary influence on the resettlement strategy during Indonesia's Saguling Dam project.

Otto Bahr Halvorsen was a Norwegian lawyer and politician from the Conservative Party. He was Prime Minister of Norway from 1920 to 1921 and again in 1923 when he died in office.

Friedrich Otto Schott was a German chemist, glass technologist, and the inventor of borosilicate glass. Schott systematically investigated the relationship between the chemical composition of the glass and its properties. In this way, he solved fundamental problems in glass properties, identifying compositions with optical properties that approach the theoretical limit. Schott's findings were a major advance in the optics for microscopy and optical astronomy.

Otto Franz Georg Schilling was a German-American mathematician known as one of the leading algebraists of his time.

Otto Wallburg was a German actor and Kabarett performer. He was a prolific film actor during the late silent and early sound era.