List of Famous people named Otto

John Otto John, commonly known as Otto John is a Nigerian professional footballer who plays as a forward for Prishtina.

Otto I, Margrave of Hachberg-Sausenberg (1302–1384) was a member of the House of Zähringen. He was the ruling Margrave of Rötteln and Sausenberg from 1318 until his death.

Otto Hönigschmid was a Czech/Austrian chemist. He published the first widely accepted experimental proof of isotopes along with Stefanie Horovitz. Throughout his career he worked to precisely define atomic weights for over 40 elements, and served on committees with the purpose of adopting internationally agreed upon values. After his home and laboratory in Munich were destroyed in World War II, he committed suicide in 1945.

Otto Knefler was a German association football player and manager.

Otto van Veen, also known by his Latinized name Otto Venius or Octavius Vaenius, was a painter, draughtsman, and humanist active primarily in Antwerp and Brussels in the late 16th and early 17th centuries. He is known for running a large studio in Antwerp, producing several emblem books, and for being, from 1594 or 1595 until 1598, Peter Paul Rubens' teacher. His role as a classically educated humanist artist, reflected in the Latin name by which he is often known, Octavius Vaenius, was influential on the young Rubens, who would take on that role himself.

Otto Knut Olof Folin was a Swedish-born American chemist who is best known for his groundbreaking work at Harvard University on practical micromethods for the determination of the constituents of protein-free blood filtrates and the discovery of creatine phosphate in muscles.

Otto Erich Deutsch was an Austrian musicologist. He is known for compiling the first comprehensive catalogue of Franz Schubert's compositions, first published in 1951 in English, with a revised edition published in 1978 in German. It is from this catalogue that the D numbers used to identify Schubert's works derive.