Gilla Ceallaigh Ua Cleirigh (died 1003) was King of Ui Fiachrach Aidhne.
Gilla Ceallaigh was the next-to-last of the Ua Cleirigh kings of Aidhne.
From this time on, the family lost power and eventually became an ecclesiastical family.
Members included: His descendants would eventually become the Ó Cléirigh Bardic family.