Disclosed is a polycarbonate resin composition including (1) a polyester compound having a structure of chemical formula 1 as defined herein or a phenyl-arylene ether sulfone compound having a structure of chemical formula 2 as defined herein; (2) a polycarbonate block copolymer; and (3) a thermoplastic aromatic polycarbonate resin or a polysiloxane-polycarbonate resin; and a molded product including the same. The polycarbonate resin composition exhibits remarkably excellent heat resistance compared to existing high heat resistance polycarbonate resins, and has an excellent balance of physical properties such as fluidity.