| Conflict: | Battle of Dhai Ali |
| Place: | Present-day Sivasagar town on the road called Dhai Ali |
| Result: | British/Ahom Victory |
| Combatant1: | East India Company Ahom Dynasty |
| Combatant2: | Moamorias |
| Commander1: | Captain Welsh Gaurinath Singha |
| Commander2: | Bharath Singha Godha Barbarua |
| Date: | May 1794 |
| Casualties1: | Light |
| Casualties2: | Heavy |
| Map Type: | India Assam#India |
| Map Relief: | Yes |
| Partof: | Moamoria rebellion |
The Battle of Dhai Ali was fought between Captain Welsh of East India Company and the Moamorias led by Bharath Singha (the Raja of Rangpur), reinforced by a contingent of troops sent to his aid by the Bengmara chief Sarbananda Singha. It was the last encounter between Captain Welsh and the Moamorias before his recallment. The site of the battle is in present-day Sivasagar town on the road called Dhai Ali. According to the Assamese traditions, Captain Welsh's last encounter with the Moamorias was a severe and decisive one.
Ahom king Gaurinath Singha watched this engagement from Rang Ghar near his palace enclosure.[1] Visheswar Vaidyadhip, the author of Belimarar Buranji described the battle with epical vigor:In this engagement, the Moamorias were finally repulsed from Rangpur.