The objective of this research is to preparation of heterogeneous catalyst from chicken bone. The catalyst was testing for biodiesel production from used cooking oil. Preparation of heterogeneous catalyst by using chemical and thermal treatment. The catalyst was characterized by morphology analysis and specific surface area. The catalytic testing was used simultaneous reaction of esterification-transesterification. The solids product of chicken bone was contained CaO composition of 42.25%. The catalyst was impregnated with FeCl3. The results of catalyst characterization were about composition of CaO of 25.60%, FeO of 1.16% and obtained surface area 32.546 m2 / g, total pore volume of 0.051 cc / g, average pore radius of 16.150 Å. The performance testing of heterogeneous catalyst was can used in biodiesel production with simultaneous reaction. In esterification and trans esterification, methyl ester can be obtained in biodiesel product. The biodiesel production conducted at mole ratio of methanol to used cooking oil 6: 1, 3% (w/w) of catalyst to cooking oil, and reaction time of 3 hours, with 22% biodiesel yield.