Domnall Ua Briain (disambiguation)

Domnall Ua Briain and Domhnall Ua Briain may refer to:


 * Domnall Gerrlámhach (died 1135), King of Dublin
 * Domnall mac Taidc (died 1115), King of the Isles, King of Thomond
 * Domnall Mór Ua Briain (died 1194), King of Thomond