| Conflict: | Battle of Deeg |
| Partof: | The Second Anglo-Maratha War |
| Date: | 13 November, 1804 |
| Place: | Deeg fort |
| Result: | Jat-Maratha victory |
| Combatant1: | British East India Company |
| Combatant2: | Maratha Confederacy Indore State Kingdom of Bharatpur |
| Commander1: | General Fraser (WIA) |
| Commander2: | Yashwantrao Holkar Ranjit Singh of Bharatpur |
| Casualties1: | 87 guns captured by the Marathas and Jats 643 killed or wounded |
| Casualties2: | About 2000 dead or wounded |
| Notes: | This battle resulted in Siege of Deeg |
| Strength1: | Unknown number of troops 160 guns |
| Strength2: | Unknown number of troops |
The Battle of Deeg, fought on 13 November 1804, took place outside Deeg, now in the Bharatpur district of Rajasthan, India. A force of the British East India Company led by Major General Fraser were defeated by a Maratha force under Yashwantrao Holkar and a force of Hindu Jats led by Maharaja Ranjit Singh. Fraser was himself mortally wounded in the attack. The Marathas captured about 87 guns of the enemy's 160. British casualties were over 640 killed or wounded. Maratha casualties were estimated at over 2,000.
"The British loss was heavy - 643 killed and wounded", including General Fraser.[1]
The action was followed up by a Siege of Deeg Fort (11 - 24 December 1804).