An object of the present invention is to provide an aromatic polycarbonate resin composition having good rigidity and good hydrolysis resistance.The present invention is an aromatic polycarbonate resin composition comprising: (A) 100 parts by weight of aromatic polycarbonate (component A) (B) 0.1 to 20 parts by weight of layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I): ##STR00001## (wherein M represents a nitrogen atom or a phosphorus atom, R.sup.1 and R.sup.2 represent an alkyl group having 6 to 16 carbon atoms and may be the same as or different from each other, and R.sup.3 and R.sup.4 represent an alkyl group having 1 to 4 carbon atoms and may be the same as or different from each other), (C) 0.1 to 50 parts by weight of compound (component C) having an affinity for the component A and having a hydrophilic component, and (D) 0.005 to 1 part by weight of ester (component D) of a higher fatty acid and a polyhydric alcohol.