The aims of this research was to study the effect of using fermented onggok in ransum to native chicken performance. The design used was completely randomized design (CRD) with 5 treatment i.e : R1 (10%), R2 (15%), R3 (20%), R4 (25%) and R5 (30%) with 4 replications. The ransum was composed with protein (18%) and calorie (2900 kcal/kg). Result of research shows that using fermented onggok had highly significant effect (P< 0.05) towards the feed consumption, body weight gain and feed conversion of buras. It was concluded that using fermented onggok could increase highly body weight at level 15%.