Gillagori Ua Dubhacan (died 1167) was Abbot of Aran, Ireland.
Gillagori appears to be otherwise unknown. His surname may be an early form of àDubhagáin. They were a bardic family from Baile UàDhubhagáin (Ballyduggan), near Loughrea, County Galway.
More notable bearers of the name would include Seán Mór àDubhagáin (died 1372), Patrick Duggan, Bishop of Clonfert (died 1896), and Winston Dugan, 1st Baron Dugan of Victoria (1876âÂÂ1951).
Gillagori appears to be the last-known abbot of Aran.