Otto II, Duke of Brunswick-Osterode
| Otto II, Duke of Brunswick-Osterode | |
|---|---|
| Born | c. 1396 |
| Died | 1452 |
| Spouse | Schonetta of Nassau-Weilburg |
| House | House of Guelph |
| Father | Frederick I, Duke of Brunswick-Osterode |
| Mother | Adelaide of Anhalt-Zerbst |
Duke Otto II (or Otho) of Brunswick-Osterode (c. 1396–c.1452) was a son of Duke Frederick I of Brunswick-Osterode and his wife, Adelaide of Anhalt-Zerbst, or possibly Elizabeth, heiress of Homburg. He succeeded his father as duke of Brunswick-Osterode in 1421 and ruled jointly with his first cousin once removed Albert II.
Otto was married to Schonetta (or Schonela) (d. 1436), a daughter of Count John I of Nassau-Weilburg. This marriage was childless.