Ailill mac Áedo Róin (died 639) was a king of the Uí Failge, a Laigin people of County Offaly.
He was the son of Áed Rón mac Cathail (died 604), a previous king.
[1] He is listed as king in the Book of Leinster king list and is also mentioned in a poem in the genealogies about the royal fort at Rathangan, County Kildare.
[3] The annals only record his death date.
[4] This biography of a member of an Irish royal house is a stub.