Otto Rantzau
Otto Rantzau is the name of the following people:
- Otto Rantzau (Provost) (~ 1500– ~ 1580), German monastery provost
- Otto von Rantzau (1809–1864), German provost and diplomat, Herr auf Aschau
- Otto zu Rantzau (1835–1910) , German court official, official in the foreign service, manor owner and member of parliament
- Otto zu Rantzau (1888–1946), German lawyer, ministerial official and police president
- Otto Manderup Rantzau (1719–1768), Danish judge and mayor of Iceland and the Faroe Islands