Toirdhealbhach mac Diarmada Ua Briain

Toirdhealbhach mac Diarmada Ua Briain (died 1167), a son of Diarmait Ua Briain, was king of Munster from 1142. His brother Tadhg deposed him in 1151, but he recovered the kingship after Tadhg's death in 1154.

In 1157 high king Muirchertach Mac Lochlainn drove him out and divided Munster, until Ruaidrí of Connacht restored him in North Munster. His own son Muirchertach deposed him in 1165, and he died in 1167. His sons included Domnall Mór Ua Briain.