| Harald Sigtryggsson | |
|---|---|
| King of Limerick | |
| Reign | 937–940 |
| Predecessor | Olaf Scabby-head |
| Successor | Ivar of Limerick |
| Died | 940 Connacht |
| Issue | Gofraid mac Arailt Maccus mac Arailt |
| Dynasty | Uí Ímair |
| Father | Sitric Cáech |
Harald Sigtryggsson (Old Irish: Aralt mac Sitric; Old Norse: Haraldr Sigtryggsson [ˈhɑrˌɑldz̠ ˈsiɣˌtryɡːsˌson], died 940) was a Viking[nb 1] leader who ruled Limerick in the early 10th century. He was the son of Sitric Cáech and great-grandson of Ímar, making him one of the Uí Ímair. He was installed as king of Limerick following the capture of the previous king Olaf Scabby-head by Harald's cousin Olaf Guthfrithson, king of Dublin, during a battle at Lough Ree in 937. Harald died in 940 and was ultimately succeeded by Ivar of Limerick.
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