A polycarbonate resin composition includes: a polycarbonate resin (A); a tetramethylene glycol derivative (B) represented by general formula (1): HO(C 4 H 8 O) m (C 3 H 6 O) n H (wherein m and n independently represent an integer of 4 to 60, and m + n represents an integer of 20 to 90); and a phosphite compound (C), an amount of the tetramethylene glycol derivative (B) is 0.005 to 5.0 parts by weight per 100 parts by weight of the polycarbonate resin (A), and an amount of the phosphite compound (C) is 0.005 to 5.0 parts by weight per 100 parts by weight of the polycarbonate resin (A). An optical molded article is obtained by molding the polycarbonate resin composition.