Indibilis and Mandonius (fl. 3rd century BC) were chieftains of the Ilergetes, an ancient Iberian people based in the Iberian Peninsula. Polybius speaks of the brothers as the most influential and powerful of the Iberian chieftains in that period.[2][3] Livy calls one of the chieftains of the Ilergetes "Indibilis".[4] at the same time, Polybius gives "Andobales" for the same person.[2] They agree that his brother chieftain was Mandonius.[5][6]