Cináed mac Mugróin (died 829) was a king of the Uí Failge, a Laigin people of County Offaly, Ireland. He was the son of Mugrón mac Flainn (died 782), a previous king.^[1] He ruled from 806 to 826.^[2]

Nothing is recorded of his reign in the annals other than his death date.^[3] His descendants were known as Clann Cináeda. His son Riacáin was ancestor of the Uí Riacáin sept (Hy-Regan).^[4] His son Niall mac Cináeda (died 849) was a King of the Uí Failge.^{[citation needed]}