Murrough Ua Cellaigh (died 1186) was the 41st King of Uí Maine and 8th Chief of the Name.
Rebellion apparently began again when during 1183–1186, further warfare broke out among the Uí Conchobair, which resulted in Ruaidrí Ua Conchobair been forced to resign the kingship in favor of his son, Conchobar Máenmaige Ua Conchobhair.
Conchobar Máenmaige swiftly dealt with Ua Cellaig, whose territory compromised the largest single lordship within the kingdom.
The Annals state, "Sixteen of the sons of the lords and chieftains of Connaught were slain by the Kinel Connell, as well as many others, both of the nobles and the plebeians.
:1186: Murrough, the son of Teige O'Kelly, Lord of Hy-Many, was slain by Conor Moinmoy O'Conor.