Mael Fabhaill Ua hEidhin (died 1048) was King of Ui Fiachrach Aidhne.
Mael Fabhaill succeeded Mhic Mac Comhaltan Ua Cleirigh.
Events which occurred during his reign included: In 1048, Mael Fabhaill Ua hEidhin, lord of Ui-Fiachrach-Aidhne, died.