Otto Köllreutter
German law professor
- Born: 1883-11-26 (Freiburg im Breisgau)
- Died: 1972-02-23 (Freiburg im Breisgau)
- Country of citizenship: Germany
- Occupation: professor; university teacher
- Member of political party: German People's Party; Nazi Party
- Member of: Sturmabteilung
- Participant in: Judges' Trial (date: 1947-04-26; role: affiant)
- Significant person: Josef Altstötter (role: acquaintance; since: 1944-01-01)
- Military rank: captain
- Employer: Ludwig Maximilian University of Munich; University of Halle-Wittenberg; University of Jena
- VIAF ID: https://viaf.org/viaf/110235541
- ISNI: https://isni.org/isni/0000000110825688
- WorldCat Identities ID: https://worldcat.org/identities/lccn-n97028247
- Library of Congress authority ID: https://id.loc.gov/authorities/names/n97028247