Gabrán mac Domangairt (Old Welsh: Gawran map Dinwarch[1]) or Gabrán the Traitor (Gwran Wradouc[1]) was king of Dál Riata in the mid-6th century.
He is the eponymous ancestor of the Cenél nGabráin.
Gabrán was the son of Domangart Réti and the father of Áedán mac Gabráin.
[2] The historical evidence for Gabrán is limited to the notice of his death in the Irish and Welsh annals.
[3] It is possible that Gabrán's death should be linked to a migration or flight from Bridei mac Maelchon, but this may be no more than coincidence.