Ottavio Farnese, Duke of Parma
| Ottavio Farnese | |
|---|---|
Portrait by Maso da San Friano, c. 1551 | |
| Duke of Parma and Piacenza | |
| Reign | 10 September 1547 – 18 September 1586 |
| Predecessor | Pier Luigi Farnese |
| Successor | Alessandro Farnese |
| Duke of Castro | |
| 1st reign | 23 September 1545 – 10 September 1547 |
| Predecessor | Pier Luigi Farnese |
| Successor | Orazio Farnese |
| 2nd reign | 18 July 1553 – 18 September 1586 |
| Predecessor | Orazio Farnese |
| Successor | Alessandro Farnese |
| Born | 9 October 1524 Valentano, Papal States |
| Died | 18 September 1586 (aged 61) Piacenza, Duchy of Parma and Piacenza |
| Burial | |
| Spouse | Margaret of Parma |
| Issue | Alessandro Farnese, Duke of Parma |
| House | Farnese |
| Father | Pier Luigi Farnese, Duke of Parma |
| Mother | Gerolama Orsini |
Ottavio Farnese (9 October 1524 – 18 September 1586) reigned as Duke of Parma and Piacenza from 1547 until his death and Duke of Castro from 1545 to 1547 and from 1553 until his death.