| Conflict: | Siege of Bidar |
| Partof: | Mughal-Bijapur War 1657-1686 |
| Date: | 2 March - 29 March 1657[1] |
| Place: | Bidar |
| Result: | Mughal victory |
| Territory: | The Mughal Empire annexed northern territories ruled by the Adil Shahi dynasty |
| Combatant1: | Mughal Empire |
| Combatant2: | Adil Shahi dynasty |
| Commander1: | Aurangzeb |
| Commander2: | Sidi Marjan |
| Strength1: | 50,000-100,000 men |
| Strength2: | 5000 Total 1,000 cavalry 4,000 infantry |
The siege of Bidar was a twenty-seven day siege mounted by the Mughal Empire against the Adil Shahi dynasty's garrison at Bidar, then controlled by Mohammed Adil Shah, Sultan of Bijapur. The garrison was commanded by Sidi Marjan, who eventually surrendered and then died of his wounds.
Aurangzeb and his army advanced towards Bijapur and besieged Bidar. The Kiladar (governor or captain) of the fortress, Sidi Marjan, defended it with 1,000 cavalry and 4,000 infantry. Sidi Marjan was mortally wounded when a gunpowder magazine exploded. After twenty-seven days of hard fighting Bidar was captured by the Mughals.
The wealthy city of Bidar became part of the Mughal Empire.