 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (November 2018) |
Otto III of Ravensberg | |
|---|---|
 Otto's grave in the Church of St. Mary in Bielefeld | |
| Born | c. 1246 |
| Died | 5 March 1306 |
| Buried | Church of St. Mary in Bielefeld |
| Noble family | House Calvelage-Ravensberg |
| Spouse(s) | Hedwig of Lippe |
| Father | Louis, Count of Ravensberg |
| Mother | Adelheid of Dassel |
Otto III of Ravensberg (c. 1246 – 5 March 1306) was Count of Ravensberg from 1249 until his death.