A resin composition which reduces hydrolysis thereof and reduces the color change thereof at the time of heating and a resin molded object which reduces hydrolysis thereof and reduces quality change of content therein are provided. The resin composition includes a resin and an organically modified layered silicate in which a substituted silyl group having a substituted or non-substituted alkyl group bonds to a layered silicate. The resin molded object is obtained by molding a resin composition including a resin and an organically modified layered silicate in which a substituted silyl group having a substituted or non-substituted alkyl group bonds to a layered silicate.