Otto Arnold

Otto Arnold is the name of the following people:

• Otto Arnold (pastor) , German-Brazilian pastor
• Otto Arnold (photographer) (1881–1944), German teacher, local researcher and photographer
• Otto Arnold (botanist) (1885–1918), German botanist and teacher
• Otto Hans Arnold (1917 – after 1967), Austrian neurologist, psychiatrist and university professor
• Otto Heinrich Arnold (1910–2000), German physician

This is a disambiguation page for differentiating between several terms identified with the same word.