Otto | |
|---|---|
| Margrave of the Nordmark | |
| Tenure | 10 September 1056 – 26 June 1057 |
| Died | 26 June 1057 Hausneindorf, Duchy of Saxony |
| Father | Bernard, Margrave of the Nordmark |
Otto (died 26 June 1057) was an illegitimate son of Bernard, Margrave of the Nordmark, and a Slav mistress whose name is unknown. He took the title march and claimed the Northern March following the death in battle of his half-brother William on 10 September 1056. However, he was opposed by Lothair Udo I and killed in battle near Hausneindorf the next summer.