| The Battle of Jelling | 
|---|
| Part of The Danish Civil War | 
| | Date | 1131 | 
|---|
 | Location |  | 
|---|
 | Result | Party of Niels-Magnus victory All of Jutland subjugated
 | 
|---|
 | 
| Belligerents | 
|---|
| The Eric Ericson party | The Niels-Magnus party | 
| Commanders and leaders | 
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| Eric II of Denmark | Niels I of Denmark | 
| Strength | 
|---|
| ~3,000 | ~1,500 | 
| Casualties and losses | 
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| ~1,000 | Minor losses | 
|  | 
|---|
| Battles of 1131-1134
Clashes between 1139-1143 Battle of LandoraBattle of Bydinge ÅBattle of GlumstrupBattle of Tjutebro
 Battles of 1147-57 Battle of SlangerupBattle of TåstrupBattle of the EiderBattle of ViborgBattle of GedbækThe Danish Småland WarThe Bloodfeast of RoskildeBattle of Grathe Heath
 | 
The Battle of Jellinge Heath took place late in the year 1131 near the town of Jelling, on the Jutland peninsula. A Zealandic and south Jutlandic army led by Eric II of Denmark fought a north Jutlandic army under King Niels I of Denmark. Niels defeated the army of Eric and then subjugated the Duchy of Southern Jutland, the duchy of Eric's late brother.