| Donnchad mac Domnaill Remair | |
|---|---|
| King of Leinster and Dublin | |
| Reign | 1086-1089 |
| Died | c. 1089 |
| Dynasty | Uí Cheinnselaig |
| Father | Domnall Remar |
Donnchad mac Domnaill Remair (died 1089), also known as Donnchadh mac Domhnall Reamhair,[1] was a late-eleventh-century ruler of the kingdoms of Leinster and Dublin. He was a son of Domnall Remar mac Máel na mBó. Donnchad was slain in 1089.