Diarmait mac Conaing was a King of Brega from the Uí Chonaing sept of Cnogba (Knowth) of the Síl nÁedo Sláine branch of the southern Ui Neill. He was the son of Conaing mac Amalgado and brother of Congalach mac Conaing, previous kings. He ruled from 778 to 786.
- Position held
- Kings of Brega
- Died
- 786
