| Conflict: | Siege of Érsekújvár |
| Partof: | Great Turkish War |
| Date: | July 7 – August 17, 1685 |
| Place: | Érsekújvár, Ottoman Empire (today: Nové Zámky, modern-day southwestern Slovakia) |
| Result: | Holy Roman Empire victory |
| Combatant2: | Ottoman Empire |
| Commander1: | Aeneas de Caprara |
| Commander2: | Unknown |
| Strength1: | 15,000 |
| Strength2: | 3,000 |
| Casualties1: | Unknown |
| Casualties2: | 3,000 killed |
The siege of Érsekújvár was fought between July 7 and August 17 of 1685, between the besieging Habsburg army and the Ottoman garrison of Érsekújvár, city in what is today Nové Zámky, Slovakia (tr|Uyvar).The Austrian commander, Aeneas de Caprara, invested the city and stormed it on August 17, slaying the entire Ottoman garrison.