List of Famous people named Otto

Otto II of Nassau was a German nobleman. He was a Count of Nassau-Dillenburg in Siegen and Dillenburg, and was a son of Count Heinrich of Nassau and Adelheid of Heinsberg.

Prof. Otto Molden was an Austrian publicist, federalist and author of various books about European identity and history. He founded the European Forum Alpbach in 1945.

Otto II of Scheyern was a son of Otto I, Count of Scheyern. His mother can not be unambiguously assigned because Otto I was married with a daughter of Count Meginhardt of Reichersbeuern and later with Haziga of Diessen and we don't know when Otto was born.

Otto Paul Hermann Diels was a German chemist. His most notable work was done with Kurt Alder on the Diels–Alder reaction, a method for diene synthesis. The pair was awarded the Nobel Prize in Chemistry in 1950 for their work. Their method of synthesizing cyclic organic compounds proved valuable for the manufacture of synthetic rubber and plastic. He completed his education at the University of Berlin, where he later worked. Diels was employed at the University of Kiel when he completed his Nobel Prize–winning work, and remained there until he retired in 1945. Diels was married, with five children. He died in 1954.

Otto Yulyevich Shmidt, better known as Otto Schmidt, was a Soviet scientist, mathematician, astronomer, geophysicist, statesman, academician, Hero of the USSR, and member of the Communist Party.

Otto I, Prince of Anhalt-Aschersleben was a German prince of the House of Ascania and ruler of the principality of Anhalt-Aschersleben.

Otto II, Count of Zutphen was a Dutch nobleman from the early 12th century. Otto was the son of Gottschalk, Count of Zutphen and Adelheid of Zutphen.

Otto III, Prince of Anhalt-Bernburg was a German prince of the House of Ascania and ruler of the principality of Anhalt-Bernburg.