Colgú mac Faílbe Flaind (died 678) [1] was a King of Munster from the Eóganacht Chaisil branch of the Eoganachta.
He was the son of Faílbe Flann mac Áedo Duib (d.639),[2] a previous king.
He succeeded Cathal Cú-cen-máthair mac Cathail as king in 665.
His known son was named Nad Froích.
He is also a prominent character in the Sister Fidelma mystery series written by Peter Tremayne.