| Alexander Farnese | |
| Prince of Parma | |
| Succession: | Governor of the Habsburg Netherlands |
| Reign: | 1678–1682 |
| Predecessor: | Carlos de Aragón de Gurrea, 9th Duke of Villahermosa |
| Successor: | Ottone Enrico del Caretto, Marquis of Savona |
| Birth Date: | 10 January 1635 |
| Birth Place: | Parma, Duchy of Parma and Piacenza |
| Death Date: | 18 February 1689 |
| Death Place: | Madrid, Spanish Empire |
| House: | Farnese |
| Father: | Odoardo Farnese, Duke of Parma |
| Mother: | Margherita de' Medici |
Alessandro Farnese (10 January 1635 - 18 February 1689) was an Italian military leader, who was Governor of the Habsburg Netherlands from 1678 until 1682.
He is not to be confused with his better known great-grandfather Alexander Farnese, Duke of Parma. This Alessandro was often called Alessandro di Odoardo (son of Odoardo). His elder brother Ranuccio II was the sixth Duke of Parma and Piacenza .
He was born in Parma, the second son of Odoardo Farnese, fifth Duke of Parma, and Margherita de' Medici.
He was general in the army of Venice, fighting the Turks and later admiral in the Spanish Navy. He became governor of the Southern Netherlands after the Franco-Dutch War.
Alexander died in Madrid in 1689.
By his mistress Maria de Lao y Carillo had the following children: