Cerball mac Muirecáin (died 909) was king of Leinster. He was the son of Muirecán mac Diarmata and a member of the Uí Fáeláin, the descendants of Fáelán mac Murchado (died 738), of one of three septs of the Uí Dúnlainge of modern County Kildare in Ireland. Cerball died in 909, when the Annals of Ulster report: Cerball son of Muirecán, an excellent king of the Laigin, died of a sickness. Given the biases of the Annals of Ulster, it is understood that Cerball had been a reliable ally of his father-in-law Flann Sinna. He was memoralised in a poem by his poet, Dallán mac Móre.