Otto IV, Count of Rietberg | |
|---|---|
| Died | 5 or 6 January 1553 Outside Metz |
| Buried | Franciscan monastery in Rietberg |
| Noble family | Werl-Arnsberg-Cuyk |
| Spouse(s) | Catharine of Zweibrücken |
| Father | Otto III, Count of Rietberg |
| Mother | Anna of Sayn |
Count Otto IV of Rietberg (d. 5 or 6 January 1553 outside Metz) was Count of Rietberg from 1535 until his death.